Racial and Ethnic Disparities in Outpatient Substance Use Disorder Treatment Episode Completion for Different Substances

Telehealth Disparities in Outpatient Substance Use Disorder (SUD) Treatment among Medicaid Beneficiaries during COVID-19

BACKGROUND

We investigated racial and ethnic disparities in telehealth counseling among Medicaid-insured patients in outpatient substance use disorder (SUD) treatment clinics and assessed whether the clinic-level proportion of Medicaid-insured patients moderated these disparities.

METHODS

Using New York State (NYS) Medicaid and statewide treatment registry data, we analyzed 24,814 admission episodes across 399 outpatient SUD clinics during the first 6 months of COVID-19 (April-September 2020). Our outcome measure was the number of tele-counseling sessions within the first 90 days of treatment. Key independent variables included beneficiary race/ethnicity and the clinic-level proportion of Medicaid-insured patients, divided into four quartiles: lowest, second, third, and highest. Mixed effects negative binomial models assessed the associations between race/ethnicity, Medicaid proportions, and telehealth use, with interaction terms evaluating the moderating role of Medicaid proportions.

RESULTS

Black and Latinx patients received fewer telehealth sessions than non-Latinx White patients, with adjusted incidence rate ratios (aIRRs) of 0.86 (95% CI: 0.82, 0.91) for Black patients and 0.93 (95% CI: 0.88, 0.98) for Latinx patients. Black patients at clinics with the highest Medicaid proportions had higher telehealth usage rates compared to those at clinics with the lowest Medicaid proportions (aIRR, 1.20; 95% CI, 1.03-1.41). Patients in clinics with the highest Medicaid proportions were more likely to use individual telehealth counseling (aIRR, 1.02-1.88; 95% CI, 1.01-3.04).

CONCLUSIONS

Significant racial disparities in telehealth use exist, with variations persisting across clinics with different Medicaid proportions. Targeted interventions are needed to address these access gaps.

Educational attainment and deaths of despair among individuals assessed for substance use severity: Findings from Swedish Addiction Severity Index (ASI) data

Aims: This study examined the association between educational attainment and the risk of deaths of despair among individuals assessed for substance use severity at municipal social services in Sweden. It aimed to determine whether the protective association between education and despair-related mortality risk, commonly observed in broader population studies, also applies to this high-risk, treatment-seeking population. Methods: We linked data from municipal Addiction Severity Index (ASI) assessments to various population registers. The study population included adults aged 25 years or older who were assessed for substance use severity between 1999 and 2019. Fine-Gray competing risk regression models were employed to examine the association between educational attainment and despair-related mortality, both overall and by subtype (alcohol-related, drug use-related, suicide). Results: Tertiary education was unexpectedly associated with increased risks of overall despair-related mortality, alcohol-related and drug use-related mortality, after controlling for demographic characteristics, ASI composite scores and substance use onset age. No significant associations were found between education and suicide. Conclusions: The counterintuitive finding that tertiary education is linked to a greater risk of despair-related mortality among social service users may be attributed to differences between the treatment-seeking population and the general population. Highly educated individuals who seek treatment from municipal social services might have severe substance use and complex psychosocial problems and/or contact social services after exhausting other treatment options. Further research is necessary to understand how educational and socioeconomic factors influence treatment pathways for individuals with severe substance use problems in Sweden and how these different pathways impact health-related outcomes.

Racial Inequality in Receipt of Medications for Opioid Use Disorder in Nationwide Outpatient Settings-A Cross-sectional Study

BACKGROUND

The surge in drug overdose fatalities in the USA, particularly from synthetic opioids, highlights the need for effective interventions. Medication for opioid use disorder (MOUD) shows promise in treatment, but disparities in access persist.

OBJECTIVE

This study was designed to investigate disparities in MOUD receipt in the outpatient settings for patients diagnosed with opioid use disorder (OUD).

DESIGN

Observational cohort study.

PARTICIPANTS

The nationwide electronic medical record (EMR) from the IQVIA Ambulatory EMR-US database was utilized, comprising 32,929 patients diagnosed with OUD between January 2014 and September 2022. The analysis focused on Black and White populations, the majority of whom have commercial insurance.

MAIN MEASURES

Access to FDA-approved medications for OUD treatment within 180 days after index OUD diagnosis across the USA were measured by medication receipt rate, average days of medication supply, and retention rate.

KEY RESULT

Notable racial disparities were identified in MOUD receipt, with Black population having significantly lower rates than White. State-level disparities were also evident, with 25 out of 41 states showing lower MOUD receipt rates among Black than in White population. Quarterly trends in receipt rates showed lower rates among Black population in most years. Additionally, the average days of supply for MOUD prescriptions were lower for Black population across most states.

CONCLUSIONS

Significant racial and state-level disparities exist in MOUD receipt among patients in outpatient settings. The study underscores the need for targeted interventions to address these inequities in MOUD access.

The Relationship of Socioeconomic Factors and Substance Abuse Treatment Dropout

Background: Treatment dropout in substance use disorder (SUD) programs poses a significant challenge to achieving successful outcomes and leads to legal and financial issues. Socioeconomic factors have been identified as key contributors to treatment attrition; yet, the specific impact of patients' socioeconomic conditions remains underexplored. The purpose of this study is to examine the relationship between socioeconomic factors and SUD treatment dropout. Methods: We conducted a retrospective analysis of socioeconomic factors associated with treatment dropout among individuals with alcohol, marijuana, and heroin substance abuse. Logistic regression was used to examine the association between patients' socioeconomic factors and treatment dropout. Adjusted odds ratios were calculated to quantify the strength of these associations. Results: Our findings demonstrate that demographic factors and financial status, including age (12-19 years), Black or African American race, and reliance on public assistance, correlate with an increased likelihood of treatment dropout. Black or African American patients receiving public assistance exhibit elevated dropout rates in ambulatory services, while patients of other single races without private insurance show higher dropout rates in detox services. Individuals aged 18-49 who are not part of the labor force have increased dropout rates in rehab services. Interestingly, patients in dependent living situations, who pay for services through private insurance or receive them at no charge, experience lower dropout rates as the number of arrests increases. Conversely, independently living patients with prior SUD treatments have higher dropout rates compared to those undergoing treatment for the first time. Conclusions: This study underscores the critical importance of addressing financial barriers to treatment access and retention in order to improve outcomes for individuals with substance use disorders (SUDs). Targeted interventions that support economically disadvantaged populations are essential for reducing treatment dropout rates and enhancing the effectiveness of SUD treatment programs.

Supporting primary care clinicians in caring for patients with alcohol use disorder: study protocol for Records for Alcohol Care Enhancement (RACE), a factorial four-arm randomized trial

BACKGROUND

Unhealthy alcohol use, a spectrum of use inclusive of risky consumption and alcohol use disorder (AUD), is a leading cause of preventable death in the United States. Most people with unhealthy alcohol use do not receive evidence-based treatment. This four-arm factorial design randomized trial will assess whether population health management (PHM) and clinical care management (CCM) support for primary care providers (PCPs) are associated with improved AUD treatment engagement among their patients, beyond electronic health record (EHR) prompting and decision support alone.

METHODS

PCPs from an urban safety-net hospital-based primary care clinic are randomized to one of four groups (1) EHR best practice advisory (BPA) and clinical decision support tools for unhealthy alcohol use (BPA), (2) BPA plus population health manager support, (3) BPA plus clinical care manager support, and (4) all three. All PCPs will have access to the EHR BPA and decision support tools which provide chart-based advisories and order set navigation. PCPs assigned to receive PHM support will receive quarterly panel-level feedback on AUD treatment metrics for their patients. PCPs assigned to receive CCM support will receive CCM facilitation of AUD treatment processes including medication counseling, referrals, and support through direct patient interactions. The primary outcome will be the percent of patients engaged in AUD treatment among those with a new AUD diagnosis on a PCP's panel. Secondary outcomes include the percent of patients with a new diagnosis of AUD who (1) initiated AUD treatment, (2) were prescribed AUD medications within 90 days, and (3) numerical counts of a range of AUD health services (outpatient encounters, specialty AUD care encounters, referrals, and acute healthcare utilization) in this sample. We will assess the primary outcome and the acute healthcare utilization secondary outcomes using Medicaid claims; the remaining secondary outcomes will be assessed using EHR data.

DISCUSSION

The study will evaluate how a targeted EHR innovation alone, compared with population health and care management enhancements alone or in combination, impact engagement in AUD treatment, a national quality of care measure. Findings will advance understanding of supports needed to improve systems of care for AUD in general settings.

TRIAL REGISTRATION

ClinicalTrials.gov identifier/registration number (NCT number): NCT05492942.

Public perceptions of opioid misuse recovery and related resources in a nationally representative sample of United States adults

AIMS

To understand how the US public defines recovery from opioid misuse and the recovery-related resources it views as most helpful, and to compare differences by opioid misuse history and demographic characteristics.

DESIGN

Observational study of data from the nationally representative AmeriSpeak® Panel survey administered in October/November 2021.

SETTING

United States.

PARTICIPANTS

6515 adults (≥ 18 years).

MEASUREMENTS

Respondents ranked 10 definitions of recovery (religious in nature; spiritual in nature; physical/mental in nature; contributing to society; enhanced quality of life; seeking professional help; having a sense of purpose; moderate/controlled substance use; no drug use; abstaining from all substance use) and 9 resources that might contribute to recovery (primary care physician; intensive inpatient program; residential rehabilitation program; self-help group; therapist/psychologist/social worker; prescribed medication; talking to family/friends; spiritual/natural healer; faith-based organization). We explored differences in rankings by opioid misuse history (personal vs. family/friend vs. no history) and demographic characteristics (race, sex, age) using multivariable ordinal logistic regression.

FINDINGS

Seeking professional help was the most endorsed recovery definition overall [mean (M) = 6.97, standard error (SE) = 0.03]. Those with personal opioid misuse history ranked enhanced quality of life (B = 0.16, P = 0.049) and having a sense of purpose (B = 0.16, P = 0.029) significantly higher, and ranked abstaining from substance use (B = -0.20, P = 0.009) significantly lower as recovery definitions than those without a history of opioid misuse. Compared with White respondents, Black (B = 0.60, P < 0.001) and Hispanic (B = 0.55, P < 0.001) respondents defined recovery as more religious in nature. Residential rehabilitation program was identified as the most helpful resource for recovery (M = 7.16, SE = 0.02), while prescribed medication received a relatively low ranking overall (M = 4.05, SE = 0.03). Those with family/friend opioid misuse history ranked prescribed medication as less helpful than others (B = -0.14, P = 0.003).

CONCLUSIONS

The general US public's views around recovery from opioid misuse appear to focus on abstinence and formal treatment receipt, while people with a history of opioid misuse place less emphasis on abstinence and greater emphasis on other aspects of well-being.

Systematic Review of Cocaine-Treatment Interventions for Black Americans

Evidence-based drug treatment studies that have shaped best practice in the United States demonstrate racial differences in effectiveness, with Black participants reporting worse outcomes compared to White participants. There are disproportionate cocaine-related overdose deaths impacting Black Americans, with limited information about interventions that serve them best. Culturally tailored treatment approaches, which incorporate participants' salient identities and experiences, have shown effectiveness in meta-analyses. Thus, this qualitative systematic review used PRISMA guidelines to identify both culturally universal and culturally tailored treatment intervention studies that addressed cocaine outcomes among Black Americans. 402 articles met initial criteria, 330 were reviewed by independent coders, and k=30 treatment approaches are described in the paper. Results indicate 72% of culturally tailored interventions were effective at reducing cocaine use, compared to 47% of culturally universal interventions. Implications for provision and funding of effective cocaine treatment interventions for Black Americans are critical to researchers, practitioners, and policymakers alike.

Outpatient substance abuse treatment completion rates for racial-ethnic minorities during the Great Recession

There has been minimal research linking the effects on racial-ethnic minorities' health outcomes, particularly research focused on racial-ethnic minorities seeking outpatient substance abuse treatment in the United States. The Great Recession from December 2007 to June 2009 in the United States provides the backdrop against the completion of substance abuse treatments among racial-ethnic minorities that may be associated with the impacts on users' social realities. We utilized data from the 2006-2011 Treatment Episode Datasets-Discharge (TEDS-D) dataset which collects data on outpatient substance abuse treatment institutions throughout the United States. The substance abuse treatment completion rates were higher prior to the Great Recession and lower following the Great Recession. Hispanics were more likely than non-Hispanic whites to complete substance abuse treatment, while other minority groups such as Non-Hispanic Blacks, were less likely to do so. Clients in the Northeast and West regions were more likely to successfully complete substance abuse treatment than those in the South. These findings have implications for impacting outpatient substance abuse treatment completion rates following the Great Recession to reduce racial-ethnic disparities which were impacted by region. Even amid an economic recession, treatment for substance abuse should continue to be a top concern.

mHealth Engagement for Antiretroviral Medication Adherence Among People With HIV and Substance Use Disorders: Observational Study

BACKGROUND

Despite the increasing popularity of mobile health (mHealth) technologies, little is known about which types of mHealth system engagement might affect the maintenance of antiretroviral therapy among people with HIV and substance use disorders.

OBJECTIVE

This study aimed to use longitudinal and detailed system logs and weekly survey data to test a mediation model, where mHealth engagement indicators were treated as predictors, substance use and confidence in HIV management were treated as joint mediators, and antiretroviral therapy adherence was treated as the outcome. We further distinguished the initiation and intensity of system engagement by mode (expression vs reception) and by communication levels (intraindividual vs dyadic vs network).

METHODS

Tailored for people with HIV living with substance use disorders, the mHealth app was distributed among 208 participants aged >18 years from 2 US health clinics. Supervised by medical professionals, participants received weekly surveys through the app to report their health status and medication adherence data. System use was passively collected through the app, operationalized as transformed click-level data, aggregated weekly, and connected to survey responses with a 7-day lagged window. Using the weekly check-in record provided by participants as the unit of analysis (N=681), linear regression and structure equation models with cluster-robust SEs were used for analyses, controlling within-person autocorrelation and group-level error correlations. Racial groups were examined as moderators in the structure equation models.

RESULTS

We found that (1) intensity, not initiation, of system use; (2) dyadic message expression and reception; and (3) network expression positively predicted medication adherence through joint mediators (substance use and confidence in HIV management). However, intraindividual reception (ie, rereading saved entries for personal motivation) negatively predicts medication adherence through joint mediators. We also found Black participants have distinct usage patterns, suggesting the need to tailor mHealth interventions for this subgroup.

CONCLUSIONS

These findings highlight the importance of considering the intensity of system engagement, rather than initiation alone, when designing mHealth interventions for people with HIV and tailoring these systems to Black communities.

Technology-Based Interventions for Substance Use Treatment Among People Who Identify as African American or Black, Hispanic or Latino, and American Indian or Alaska Native: Scoping Review

BACKGROUND

In the United States, racial and ethnic disparities in substance use treatment outcomes are persistent, especially among underrepresented minority (URM) populations. Technology-based interventions (TBIs) for substance use treatment show promise in reducing barriers to evidence-based treatment, yet no studies have described how TBIs may impact racial or ethnic health equity.

OBJECTIVE

This study explored whether TBIs in substance use treatment research promote health equity among people who identify as African American or Black, Hispanic or Latino, and American Indian or Alaska Native through their inclusion in research. We explored whether research that includes the aforementioned groups consciously considers race and/or ethnicity beyond including these populations as participants.

METHODS

We conducted a scoping review of 5 electronic databases to identify TBIs in substance use treatment studies published in English between January 2000 and March 2021. Studies were included if ≥50% of participants identified as African American or Black, Hispanic or Latino, or American Indian or Alaska Native when combined. Included studies were evaluated for conscious consideration of race and ethnicity in at least one manuscript section. Finally, we conducted a critical appraisal of each study's potential to facilitate insights into the impact of a TBI for members of specific URM groups.

RESULTS

Of 6897 titles and abstracts screened and 1158 full-text articles assessed for eligibility, nearly half (532/1158, 45.9%) of the full-text articles were excluded due to the absence of data on race, ethnicity, or not meeting the aforementioned demographic eligibility criteria. Overall, 110 studies met the inclusion criteria. Study designs included 39.1% (43/110) randomized trials, and 35.5% (39/110) feasibility studies. In total, 47.3% (52/110) of studies used computer-based interventions, including electronic screening, brief interventions, and referrals to treatment, whereas 33.6% (37/110) used interactive voice response, ecological momentary assessment or interventions, or SMS text messaging via mobile phones. Studies focused on the following substances: alcohol or drugs (45/110, 40.9%), alcohol alone (26/110, 23.6%), opioids (8/110, 7.3%), cannabis (6/110, 5.5%), cocaine (4/110, 3.6%), and methamphetamines (3/110, 2.7%). Of the studies that consciously considered race or ethnicity (29/110, 26.4%), 6.4% (7/110) explicitly considered race or ethnicity in all manuscript sections. Overall, 28.2% (31/110) of the studies were critically appraised as having a high confidence in the interpretability of the findings for specific URM groups.

CONCLUSIONS

While the prevalence of TBIs in substance use treatment has increased recently, studies that include and consciously consider URM groups are rare, especially for American Indian or Alaska Native and Hispanic or Latino groups. This review highlights the limited research on TBIs in substance use treatment that promotes racial and ethnic health equity and provides context, insights, and direction for researchers working to develop and evaluate digital technology substance use interventions while promoting health equity.

The ACA Medicaid expansions and the supply of substance use disorder treatment services in Spanish

BACKGROUND

Given persistent disparities in substance use disorder (SUD) treatment for Spanish speakers, it is important to understand whether major health policy changes may improve access to linguistically competent services. We estimate changes in the supply of SUD treatment facilities that both accept Medicaid as payment and offer services in Spanish after the Medicaid expansions under the Affordable Care Act.

METHODS

We use data from the Mental Health and Addiction Treatment Tracking Repository for years 2010-2020 to calculate the number of facilities per 100 that offered both services in Spanish and accepted Medicaid as payment, facilities per 100 that accepted Medicaid as a form of payment overall, and facilities per 100 that offered Spanish language services overall. We use a difference-in-differences strategy exploiting variation in the timing of the Medicaid expansions across states, and county-level variation in the share of Spanish speaking Latinos across and within states.

RESULTS

We find that treatment facilities that both accepted Medicaid as a form of payment and offered Spanish language services increased by roughly 2-3 per 100, on average, in counties with the highest shares of Spanish speakers compared to counties with low to medium shares. This increase may be explained by more facilities accepting Medicaid as a form of payment.

CONCLUSION

The Medicaid expansions under the ACA produced a modest increase in the supply of SUD treatment facilities that both accepted Medicaid as payment and provided services in Spanish in areas with highest shares of Spanish speakers.

Racial-ethnic disparities across substance use disorder treatment settings: Sources of treatment insurance, socioeconomic correlates and clinical features

Aim: Contrary to expectations, studies of racial-ethnic disparities in substance use disorder (SUD) treatment frequently uncover minority-majority parity in access and utilization of services. What accounts for the anomaly? To answer the question, this study explores racial-ethnic differences in the odds of utilization of SUD treatment in varied settings (e.g., the criminal justice system, private doctor's office, etc.), adjusting for sources of treatment insurance, socioeconomic correlates of treatment (e.g., employment, income, education), as well as clients' clinical features (e.g., type of substance abuse/dependence, co-morbidities, health status). Methods: Data were compiled from the National Survey of Drug Use and Health (NSDUH) dataset, 2002-2014. The sample consisted of respondents with a past year diagnosis of a substance use disorder, who also reported having received treatment (n = 6,207). Data were pooled to maximize subgroup analyses. Weight- and design- adjusted logistic regressions were use to analyze factors predicting SUD treatment source. Results: Blacks were more likely than Whites to receive treatment through the criminal justice system and Whites more likely than Blacks and Latinx to receive treatment at a doctor's office. Blacks were also more likely than Whites to receive treatment through inpatient/outpatient rehabilitation, before adjustments but not afterwards. Discussion: In this study we show that even after adjusting for mechanisms expected to shape pathways from race-ethnicity to SUD treatment sites, significant racial-ethnic disparities persist. This fills an important gap in the literature in that disparities research has not explicitly modeled racial-ethnic variation across the full range of SUD treatment sites.

Disparities in substance use treatment retention: An exploration of reasons for discharge from publicly funded treatment

Although Delaware is the seventh smallest state in the country (including Washington, D.C.) in terms of population size, it has the second highest drug overdose death rate. The Delaware Division of Substance Abuse and Mental Health has increased attention in identifying disparities in treatment outcomes. We explored reasons for discharge from publicly-funded treatment in Delaware with special attention to populations at risk for health inequities, with a focus on covariates of treatment non-completion. Using secondary data collected from publicly-funded treatment providers, we analyzed data from individuals that were admitted to substance use treatment between 2015 and 2019 and had been discharged in 2019. We did this by using logistic and multinomial regression, focusing on non-completion treatment outcomes such as failure to meet requirements, loss of contact, and treatment refusal. Clients who were Black or African American, compared to white clients, were more likely to be lost contact with, administratively discharged, or marked as failing to meet treatment requirements than having a completed treatment discharge. Women were 30% less likely than men to have "failed to meet treatment requirements" compared to completing treatment. Further investigation is needed into these patterns. While treatment quality cannot be assessed using this data, the results point to a need for closer study of disparities in treatment related to race, ethnicity, gender, employment, criminal justice involvement, and type of drug used. Treatment providers should be made aware of culturally informed care, as well as client-created goals, in order to reduce disparities in exit from treatment.

Worsening trends in the frequency of methamphetamine and other stimulant use between treatment admission and discharge

BACKGROUND

Treatment for methamphetamine and other stimulants can be effective but treatment attrition and continued use are very high. Abstinence is the conventional outcome used to evaluate treatment success, but defining treatment success in this way misses opportunities to promote improved health even when abstinence is not achieved. Reducing methamphetamine and stimulant use without abstinence is associated with many positive outcomes. However, little is known about drug use patterns during treatment or trends in use over time.

METHODS

We used the Treatment Episode Dataset-Discharges (TEDS-D) to identify treatment episodes that had a stimulant drug indicated as the primary substance of use (2017-2021; N=251,841; methamphetamine, cocaine, other amphetamines, or other stimulants). Our outcome was the change in the frequency of drug use between admission and discharge (decreased use with abstinence, decreased use without abstinence, increased use). We used multiple logistic regression to model a change in drug use frequency, predicted by year, stimulant type, and their interaction.

RESULTS

Nearly two-thirds of the sample (60 %) had methamphetamine indicated as the primary stimulant of use. There was a decrease in the predicted rate of abstinence over time and worsening trends were strongest among those using methamphetamine. Daily and periodic drug use at both admission and discharge (no change in use) became worse over time, particularly for those using methamphetamine.

CONCLUSION

Treatment outcomes worsened over time and declined fastest among those reporting methamphetamine. Abstinence was rare and most treatment clients did not change their drug use behavior. We recommend a renewed focus on evidence-based harm reduction while the nation's treatment systems continue grappling with the stimulant crises.

Inequities in naloxone administration among fatal overdose decedents by race and ethnicity in Pennsylvania, 2019-21

AIMS

The aim of this study was to characterize the circumstances of drug overdose deaths and determine whether naloxone administration differed by overdose decedent race and ethnicity.

DESIGN AND SETTING

Analysis of data on unintentional and undetermined intent drug overdose deaths in Pennsylvania (2019-21) was collected from death certificates and the State Unintentional Drug Overdose Reporting System. Multivariable logistic regression models were adjusted for overdose death circumstances and the odds of naloxone administration were estimated by race/ethnicity and year.

CASES

The analytical sample included 3386 fatal overdose decedents in 2019, 3864 in 2020 and 3816 in 2021.

MEASUREMENTS

Evidence of naloxone administration (yes/no) was defined using scene evidence and toxicology reports from coroner and medical examiner records, while race/ethnicity (Hispanic, non-Hispanic Black, non-Hispanic White) was based on the death certificate.

FINDINGS

In the analytic sample, overdose death rates were the highest among Black people and increased over time (rate per 10 000 population, 2019: 4.3; 2020: 6.1; 2021: 6.5); rates were lowest among White people and remained constant over time (rate per 10 000 population, 2019: 2.6; 2020: 2.7; 2021: 2.6). Throughout all years, Black decedents had approximately 40-50% lower odds of naloxone administration compared with White decedents as referent [2019: odds ratio (OR) = 0.7, 95% confidence interval (CI) = 0.5-0.9; 2020: OR = 0.5, 95% CI = 0.4-0.7; 2021: OR = 0.6, 95% CI = 0.5-0.8], while Hispanic decedents had similar odds of naloxone administration to that of White decedents.

CONCLUSION

After controlling for overdose circumstances in drug overdose deaths in Pennsylvania, USA, from 2019 to 2021, Black people had lower odds of naloxone administration compared with White people, while there were no differences between Hispanic and White people.

Substance use treatment completion and criminal justice system contact in Chile: A retrospective, linked data cohort study

BACKGROUND AND AIMS

Substance use treatment (SUT) has shown to be effective in reducing self-reported offending; however, the association between SUT completion and criminal justice system (CJS) contact has been underexplored, especially in Latin America. This study aimed to estimate the association between SUT completion status and (1) any subsequent CJS contact and (2) CJS contact leading to imprisonment, at 1, 3 and 5 years post-discharge, in Chile.

DESIGN

Retrospective cohort study using multivariable survival analysis based on linked administrative data from 2010 to 2019.

SETTING

This study took place in Chile, where SUT is available at no cost through Chile's publicly funded health-care, and is provided in outpatient and inpatient modalities in public and private centres.

PARTICIPANTS

A total of 70 854 individuals received their first SUT from 2010 to 2019. They were mainly males (76.3%), and their main substance used at admission was cocaine paste (39.2%).

MEASUREMENTS

SUT completion status included completion, late dropout (≥ 3 months) and early dropout (< 3 months). Outcomes were (1) any CJS contact and (2) CJS contact leading to imprisonment after baseline treatment. We estimated the association between treatment completion and CJS contact through flexible parametric Royston-Parmar models while adjusting for several covariates.

FINDINGS

Those who completed SUT (27.2%) were less likely to have any CJS contact at 5 years post-SUT compared with those who dropped out late [with a gap of -9.5%, 95% confidence interval (CI) = -8.7, -10.3] and early (-11.2%, 95% CI = -10.1, -12.3). Also, those who completed SUT were less likely to have CJS contact leading to imprisonment at 5 years post-SUT compared with those who dropped out late (-2.6%, 95% CI = -2.2, -3.1) and early (-4.0%, 95% CI = -3.3, -4.6). These differences were also observed at 1 and 3 years post-SUT for each outcome.

CONCLUSIONS

In Chile, completion of substance use treatment appears to be associated with lower probabilities of both any criminal justice system contact and contact leading to imprisonment.

Exploring racial and secondary substance use differences in route of administration of opioid drugs: Analysis of the 2015-2019 treatment admission data

INTRODUCTION

The opioid crisis continues to evolve with increasing opioid-related overdose deaths among under-represented minorities. A better understanding of substance use differences in the route of administration for people using heroin and other opioids can lead to targeted strategies and interventions.

METHODS

Using the 2015-2019 Treatment Episode Data Set - Admissions (TEDS-A), a multinomial logistic regression model examined the relationship between race/ethnicity and secondary substance use with route of administration in a subset of 591,078 admissions.

RESULTS

For individuals reporting heroin as their primary substance, minoritized clients were both more likely to smoke (NH Blacks RR: 2.28, 95 % CI 2.16-2.41; Hispanic RR: 1.80, 95 % CI: 1.74, 1.87; Other RR: 2.09, 95 % CI: 2.00, 2.20) or inhale heroin (Hispanic RR: 1.82, 95 % CI 1.78-1.85; Other RR: 1.30, 95 % CI 1.25, 1.34) compared to non-Hispanic (NH) Whites. NH Black clients were nearly seven and a half times more likely to report inhaling (RR: 7.45, 95 % CI 7.28, 7.62) heroin over injecting it. Clients were more likely to smoke heroin compared to injection if they reported secondary drug use of methamphetamines (RR: 2.28, 95 % CI 2.21, 2.35) and other opioids (RR: 1.21, 95 % CI 1.15, 1.28). For clients reporting other opioids as their primary substance, Hispanic (RR: 1.33, 95 % CI 1.19, 1.47) and other racial/ethnic minority clients (RR: 2.50, 95 % CI 2.23, 2.79) were more likely to smoke opioids vs take it orally compared to their NH White counterparts. Individuals who reported methamphetamine use as a secondary substance were significantly more than three times as likely to smoke (RR: 3.07, 95 % CI 2.74, 3.45) or inject (RR: 3.36, 95 % CI 3.17, 3.57) compared to orally ingesting opioids, while those who reported cocaine or crack cocaine use were more than twice as likely to inject (RR: 2.22, 95 % CI 2.09-2.36) opioids than taking them orally.

CONCLUSION

Findings demonstrate significant racial and ethnic differences in the route of administration. This work expands on the understanding of the complex nature of polysubstance use in the evolving opioid crisis and the secondary substance use of clients on routes of administration of opioids and heroin, highlighting the need for tailored interventions to address the treatment needs of under-represented minorities.

Risk factors of substance use treatment gaps among a nationally representative sample of black American adults in relation to sexual minority status and health insurance coverage

BACKGROUND

Little research has investigated predictors of specialty substance use treatment gaps among Black adults. This study examined differential odds of experiencing self-reported, past-year treatment gaps among Black adults with respect to sexual minority status and health insurance coverage, accounting for social cofactors.

METHOD

This cross-sectional study comprised 36,098 Black Americans aged 18 and older who completed the 2015-2019 National Survey on Drug Use and Health (NSDUH) and provided responses for all selected survey items. Design-based multivariable logistic regression models were used to examine predictors of drug and alcohol treatment gaps.

RESULTS

Sexual minority Black adults reported greater odds of experiencing treatment gaps to specialty treatment (i.e., inpatient hospital, inpatient/outpatient rehabilitation facility, or mental health center) compared to Black heterosexuals in adjusted models (Gay or lesbian: AOR = 2.01, 95% CI = 1.39-2.89; Bisexual: AOR = 2.35, 95% CI = 1.77-3.12), with bisexual Black women experiencing the greatest odds (AOR = 3.10, 95% CI = 2.33-4.14). Black adults with no health insurance were significantly more likely to report substance use treatment gaps relative to their peers with health insurance coverage (AOR = 50, 95% CI = 1.26-1.78).

CONCLUSION

The results suggest a critical need for more investigations into patterns of specialty substance use treatment gaps within Black populations and for developing sexual identity-affirming mechanisms for closing the disparity gap, particularly for Black sexual minorities and those who lack health insurance coverage.

The ASAM/AAAP Clinical Practice Guideline on the Management of Stimulant Use Disorder

The American Society of Addiction Medicine/American Academy of Addiction Psychiatry (ASAM/AAAP) Clinical Practice Guideline on the Management of Stimulant Use Disorder provides guidance on evidence-based strategies for the treatment of stimulant use disorders (StUDs), stimulant intoxication, and stimulant withdrawal, as well as secondary and tertiary prevention of harms associated with stimulant use. The Clinical Guideline Committee (CGC) comprised experts from ASAM and AAAP representing a range of clinical settings and patient populations. The guideline was developed following modified GRADE methodology. The process included a systematic literature review as well as several targeted supplemental searches. The CGC utilized Evidence to Decision tables to review available evidence and rate the strength of each recommendation. The clinical practice guideline was revised based on external stakeholder review. Key takeaways included: Contingency management represents the current standard of care for treatment of StUDs; Pharmacotherapies may be utilized off-label to treat StUDs; Acute stimulant intoxication can result in life-threatening complications that should be addressed in an appropriate level of care; Secondary and tertiary prevention strategies should be used to reduce harms related to risky stimulant use.

Employment, coronavirus victimization distress, and substance use disorders among black and non-Hispanic White young adults during the COVID-19 pandemic

Substance abuse among young adults increased during the COVID-19 pandemic. Although pre-pandemic data indicate non-Hispanic White adults had higher levels of substance use disorder (SUD), Black adults suffered more serious consequences. The COVID-19 pandemic has introduced new stressors that may contribute to SUD, especially among Black young adults, including employment as essential workers, which may be related to victimization distress associated with the coronavirus (i.e., coronavirus victimization distress). The current study administered an anonymous, cross-sectional, online survey to a national sample of 132 Black and 141 non-Hispanic White adults 18 - 25 years to assess the relationship between health, economic disparities, employment, coronavirus victimization distress, and substance use during the first wave of the pandemic. Controlling for COVID-19 health risks and income, structural equation models indicated that coronavirus victimization distress fully accounted for the positive association between employment and SUD risk, and this association was more pronounced among Black young adults. Findings underscore the urgency of considering disease-related victimization in SUD interventions involving employed young adults during infectious disease pandemics.

Spatial and Environmental Correlates of Prevalence of Treatment for Substance Use Disorders, Retention, and SUD Services Utilization in South Sardinia

This study explored the economic, social, and spatial correlates of treatment prevalence, retention, and service utilization for substance use disorder (SUD) in South Sardinia. Data from 1,667 patients with an ICD-10 diagnosis of SUD were extracted from the medical records of individuals assisted by three public addiction services in 2019. We used a spatial autoregressive model, a parametric proportional hazard model, and Poisson regression to examine the associations of spatial factors and residents' socioeconomic status with the prevalence of treatment at the census block level, treatment retention, and SUD service utilization at the individual level. The prevalence was higher among residents of areas closer to competent treatment centers, with the worst building conservation status, a lower percentage of high school and university graduates, and a higher percentage of unemployed, divorced, separated, or widowed residents. Men who were older at the time of their first treatment access; primary users of cocaine, cannabis, and alcohol; had higher education level; and who lived far from competent treatment centers and closer to drug trafficking centers interrupted their treatment earlier. Primary heroin users experienced more SUD treatment encounters. Living in economically and socially disadvantaged areas and near treatment facilities was associated with a higher prevalence, whereas living near drug-dealing centers and far from competent treatment centers was associated with a decrease in treatment retention.

The impact of spiritual well-being and social support on substance use treatment outcomes within a sample of predominantly Black/African American adults

INTRO

Substance use and associated problems often return following treatment for substance use disorder (SUD), which disproportionally impact Black/African American (AA) individuals. Social support and spiritual well-being are sources of recovery capital identified as particularly important among Black/AA adults. Social support and spiritual well-being are also posited mechanisms in 12-step; thus, this study tested the effects of social support and spiritual well-being on substance use outcomes over time, distinct from 12-step involvement, among Black/AA adults post-SUD treatment. The study hypothesized that social support and spiritual well-being would demonstrate significant interactions with time, respectively, on substance use frequency and substance use consequences, above the effect of 12-step involvement.

METHOD

The study drew data from a study of 262 adults (95.4 % Black/AA) entering residential SUD treatment (NCT#01189552). Assessments were completed at pretreatment and at 3-, 6-, and 12-months posttreatment. Two generalized linear mixed models (GLMM) tested the effects of social support and spiritual well-being, above the effect of 12-step involvement, on substance use frequency and substance use consequences over the course of 12-months posttreatment.

RESULTS

Higher spiritual well-being predicted significantly less frequent substance use during recovery (β = 0.00, p = .03). Greater 12-step involvement predicted significantly fewer substance use consequences during recovery (β = 0.00, p = .02). In post hoc analyses the effect of spiritual well-being and 12-step involvement dissipated by 3.5- and 6.6-months posttreatment, respectively. The study found no significant effects of social support over time.

DISCUSSION

Spiritual well-being and 12-step involvement are associated with lower substance use and substance use consequences, respectively, in the early months of posttreatment recovery among Black/AA adults. These findings contribute to the growing recovery capital literature informing paths to recovery and sources of support outside of 12-step affiliation. However, these effects diminish over time.

Substance Use Overdose Deaths Among Black and Indigenous Women in Wisconsin: A Review of Death Certificate Data From 2018 to 2020

OBJECTIVES

We are in the midst of an overdose epidemic that has grown during the concurrent COVID-19 pandemic. In Wisconsin, overdose deaths increased 11-fold from 2000 to 2020, with over 1200 deaths in 2020. Because of disparities in substance use initiation, relapse, and treatment success among racially minoritized women, this study's purpose was to investigate overdose death rates among Black and Indigenous women in Wisconsin from 2018 to 2020.

METHODS

Overdose death rates were examined under the following parameters: sex, race (Black, Indigenous, White), age, year, and manner of death. Logistic regression analysis was also conducted looking at death count data, with race, age, and year as potential predictor variables.

RESULTS

Death rates (per 100,000) in 2018 were 14.1 (12.6-15.5) for White women, 20.8 (14.7-26.9) for Black women, and 26.5 (10.0-42.9) for Indigenous women; these rates increased in 2020 to 16.4 (14.8-17.9), 32.5 (25.0-40.0), and 59.9 (35.8-84.0) for White, Black, and Indigenous women, respectively. Regression findings illustrated that being Black or Indigenous and aged 15 to 44 or 45 to 64 years were significantly more likely to die from most causes of death (any drug, any opioid, prescription opioid, heroin, synthetic opioids, and cocaine; adjusted odds ratios > 1.25, P s < 0.001).

CONCLUSIONS

This study confirms that deaths in Wisconsin are disproportionately higher in female minoritized populations. Understanding the complex intricacies between the impacts of the COVID-19 pandemic coupled with barriers to treatment access or acceptability in these populations is urgently needed. It will take a multipronged approach to address the overdose epidemic and better serve these marginalized, vulnerable populations.

Addressing substance use disorder in a hospital prenatal setting

Pregnancy can be a time of joy and hope but, for birthing parents struggling with a substance use disorder (SUD), it can be challenging. Social stigma, shame, and the potential legal ramifications present barriers to individuals seeking the care they need. Marginalized groups, in particular, face challenges that put them at even greater risk for substance misuse. Substance use during pregnancy can further impair the individual's level of functioning, and it has also been associated with problems in the social, emotional, and cognitive development of their children. Pregnancy and addiction each require guidance and good medical care. By integrating substance misuse treatment services under the umbrella of their medical care, clinics facilitate timely access to care, as well as help break the stigma associated with substance misuse. Our program offers a comprehensive and multidisciplinary approach to support pregnant individuals with SUDs. Interventions include support, education, case management, and mental health counseling. By providing optimal prenatal care early on, individuals can receive the treatment that they need so that they can achieve physical and emotional stability once the baby arrives, which ultimately has better outcomes for the parent and child's health and wellbeing.

Intersectional disparities in outpatient alcohol treatment completion by gender and race and ethnicity

BACKGROUND

Untreated alcohol use disorder (AUD) can have negative outcomes, including premature death. Completing specialty treatment for AUD can improve economic and educational outcomes. However, there are large racial and ethnic disparities in treatment completion, and how these disparities vary intersectionally (e.g., by gender and race and ethnicity) is unknown. Recent studies suggest that not using an intersectional approach can mask important disparities. We estimated disparities in AUD nonintensive outpatient treatment completion by gender alone, race and ethnicity alone, and intersectionally in a gender-by-race-and-ethnicity model. Accurately quantifying treatment completion disparities is critical not only for understanding healthcare disparities but reducing them to advance health equity.

METHODS

Data are from SAMHSA's 2017 to 2019 Treatment Episode Dataset-Discharges for adults aged 18+ who entered nonintensive outpatient treatment primarily for alcohol (n = 559,447 episodes; 30.3% women; 63.7% White, 18.0% Black, 14.4% Hispanic/Latinx, 2.1% American Indian/Alaska Native [AIAN], 1.0% Asian/Pacific Islander). Using the rank-and-replace method, treatment completion disparities were estimated by gender, race and ethnicity, and gender-by-race-and-ethnicity due to any reason other than differences in need for treatment, consistent with the Institute of Medicine's definition of a healthcare disparity.

RESULTS

The intersectional gender-by-race-and-ethnicity model identified the widest range of disparities among all models tested. Using this model, the largest disparities were identified for minoritized women's treatment episodes. Compared to White men whose completion rate was 60.79% (95% confidence interval [CI]: 60.06, 60.98), Black, Hispanic/Latina, AIAN, and Asian-American/Pacific Islander women had treatment episode completion rates that were 12.35 (CI: 12.33, 12.37), 9.08 (CI: 9.06, 9.11), 10.27 (CI: 10.22, 10.32), and 4.87 (CI: 4.78, 4.95) percentage points lower, respectively.

CONCLUSIONS

In the United States, treatment completion rates for non-intensive outpatient alcohol treatment episodes are significantly lower for minoritized women than White men. The extent of the disparity is not apparent in univariate models, highlighting the importance of an intersectional approach to understanding disparities in the completion of non-intensive outpatient treatment for AUD.

The Intersections Between Sexual Orientation, Latine Ethnicity, Social Determinants of Health, and Lifetime Suicide Attempts in a Sample Being Assessed for Entry to Co-Occurring Mental Health and Substance Use Disorder Treatment

PURPOSE

Few studies have examined the relationship between the intersections of lesbian, gay, and bisexual (LGB) sexual orientation, Latine ethnicity, and lifetime suicide attempts in Latine individuals with substance use disorder. This study examines this intersection and controls for social determinants of health, mental health disorder symptoms, and substance use disorder symptoms in a sample of Latine adults entering treatment for co-occurring disorders.

METHOD

Bivariate statistics and multivariate logistic regression were used to analyze assessment data (n = 360) from a bilingual/bicultural integrated behavioral health system serving Latine communities in Massachusetts to examine the relationship between sexual orientation, Latine ethnicity, and history of lifetime suicide attempts. We controlled for social determinants of health, mental health disorders, and substance use disorder (SUD) factors significantly associated with lifetime suicide attempts at the bivariate level.

RESULTS

Over 27% of the sample and 35% of Puerto Ricans (PR) reported lifetime suicide attempts. The logistic regression identified that PR clients were 78% more likely to have attempted suicide in a lifetime compared to non-PR clients. Clients identifying as LGB were 3.2 times more likely to report having attempted suicide in their lifetime compared to heterosexual clients. Unemployed clients were 2.4 times more likely to report having attempted suicide in their lifetime compared to employed clients.

CONCLUSION

Findings identify high rates of lifetime suicide attempts among LGBs and PRs entering SUD treatment. Targeted outreach and treatment efforts designed to address intersectionality for this underserved population are needed.

Neural and Psychosocial Mechanisms Underlying Alcohol Use and Pain Interactions: Overview of Current Evidence and Future Directions

Purpose of Review

A growing body of research indicates bidirectional associations between alcohol use and pain. In this review, we highlight common neural and psychosocial mechanisms underlying pain and alcohol use and identify current gaps in the literature regarding alcohol/pain interactions. We also suggest future directions for the field moving forward, including more nuanced conceptualization of alcohol's negative reinforcing effects in the context of pain, broader use of clinically-relevant experimental pain induction modalities, and characterization of age, biological sex, gender, race, and ethnicity as moderators of pain/alcohol interactions.

Recent Findings

Acute alcohol intake has analgesic and negative-reinforcing effects in the context of pain, and chronic heavy alcohol use appears to increase risk for development of chronic pain. At the same time, pain, both acute and chronic, acts as a proximal antecedent for alcohol use and is associated with relapse risk for individuals in recovery from alcohol use disorder.

Summary

Although the links between alcohol use and pain are increasingly appreciated, significant gaps in understanding remain and systematic study of alcohol/pain interactions at all levels, including basic, preclinical, translational, and interventional, is needed.

Integrative data analysis of clinical trials network studies to examine the impact of psychosocial treatments for black people who use cocaine: Study protocol

BACKGROUND

Cocaine overdose death rates among Black people are higher than that of any other racial/ethnic group, attributable to synthetic opioids in the cocaine supply. Understanding the most effective psychostimulant use treatment interventions for Black people is a high priority. While some interventions have proven effective for the general population, their comparative effectiveness among Black people remains unknown. To address this gap, our NIDA-funded Clinical Trials Network (CTN) study (0125), will use Integrative Data Analysis (IDA) to examine treatment effectiveness across 9 CTN studies. This manuscript describes the study protocol for CTN-0125.

METHODS

Of the 59 completed randomized clinical trials in the CTN with available datasets, nine met our inclusion criteria: 1) behavioral intervention, 2) targeted cocaine use or use disorder, 3) included sub-samples of participants who self-identified as Black and 4) included outcome measures of cocaine and psychostimulant use and consequences. We aim to 1) estimate scale scores of cocaine use severity while considering study-level measurement non-invariance, 2) compare the effectiveness of psychosocial treatments for psychostimulant use, and 3) explore individual (e.g., concomitant opioid use, age, sex, employment, pre-treatment psychiatric status) and study-level moderators (e.g., attendance/retention) to evaluate subgroup differences in treatment effectiveness.

CONCLUSION

The NIDA CTN provides a unique collection of studies that can offer insight into what interventions are most efficacious for Black people. Findings from our CTN-0125 study have the potential to substantially inform treatment approaches specifically designed for Black people who use psychostimulants.

Associations among discrimination, psychological functioning, and substance use among US Black adults aged 18-28: Moderation by racial attribution and sex

INTRODUCTION

Discrimination is associated with poor mental health and substance use among Black Americans, but research is needed on mediators and moderators of these relationships. This study tested whether: 1) discrimination is associated with current alcohol, tobacco (cigarette or e-cigarette), and cannabis use among US Black emerging adults; 2) psychological distress (PD) and positive well-being (PW) are mediators of discrimination-substance use relationships; and 3) these relationships are moderated by sex and attributions to discrimination (racial vs. nonracial).

METHODS

Using data from a 2017 US nationally representative survey, we conducted bivariate and multiple-group moderated mediation analyses among 1118 Black American adults aged 18-28. The study assessed discrimination and attribution to discrimination using the Everyday Discrimination scale, past 30-day PD with the Kessler-6 scale, and past 30-day PW with the Mental Health Continuum Short Form. We utilized probit regression for all structural equation models and adjusted final models for age.

RESULTS

Discrimination was positively associated with past 30-day cannabis and tobacco use directly and indirectly through PD in the overall model. Among males who reported race as the sole/main attribution to discrimination, discrimination was positively associated with alcohol, cannabis, and tobacco use through PD. Among females who reported race as the sole/main attribution to discrimination, discrimination was positively associated with cannabis use through PD. Discrimination was positively associated with tobacco use among those who reported nonracial attributions to discrimination and with alcohol use among those whose attribution was not assessed. Discrimination was positively associated with PD among those who reported race as a secondary attribution to discrimination.

CONCLUSIONS

Discrimination specifically attributed to race may contribute to greater PD and in turn alcohol, cannabis, and tobacco use among Black emerging adults, especially males. Future substance use prevention and treatment efforts targeted to Black American emerging adults may benefit from addressing racial discrimination and PD.

Drugs and racial microaggressions: A mediation analysis of racism, mental health, and coping strategies

INTRODUCTION

Racial microaggressions are daily slights and denigrations perpetrated toward people of color (PoC). These forms of everyday racism are significant stressors for PoC and can insult, invalidate, and assault racial identities. Past findings on discrimination indicate a strong link between engagement in maladaptive behaviors (e.g., substance use and behavioral addictions) and perceived racism. Although the topic of racism is receiving more traction, a dearth of knowledge still persists on racial microaggressions and how these daily interactions can elicit negative coping behaviors, particularly substance use. The current study examined the relationship among microaggressions, substance use, and psychological distress symptoms. Specifically, we aimed to explore if PoC cope with racial microaggressions by using substances.

METHODS

We surveyed 557 PoC within the United States using an online platform. Participants answered questions related to their experiences with racial microaggressions, drug and alcohol use as coping strategies for discrimination, and self-reported mental health. Experiences with racial microaggressions was the main predictor variable and the drug and alcohol use as coping strategy was the main outcome variable. The study tested psychological distress as the main mediator for the relationship between racial microaggressions and drug and alcohol use.

RESULTS

Findings indicated that microaggressions were a significant predictor of psychological distress symptoms, B = 0.272, SE = 0.046, p < .001, and psychological distress was a significant predictor of coping strategies that involved substance and alcohol use, B = 0.102, SE = 0.021, p < .001. Racial microaggressions were no longer a significant predictor of coping strategies that involved substance and alcohol use after controlling for psychological distress, B = 0.027, SE = 0.024, p = .260. In an exploratory approach, our model was further explained by assessing alcohol refusal self-efficacy, which results suggest be a second mediator in the relation between racial microaggressions and substance use.

CONCLUSION

Overall, results suggest that racial discrimination exposes PoC to higher risks for both poorer mental health and the misuse of substances and alcohol. Practitioners treating PoC with substance abuse disorders might also need to assess the psychological impact of experiences with racial microaggressions.

Measurement Invariance and Differential Relationship to Substance Use of the Short UPPS-P Impulsive Behavior Scale Across Racial Groups

The Short UPPS-P Impulsive Behavior (SUPPS-P) scale assesses impulsive traits; however, its use among racial/ethnic minorities needs further testing. The aims of this study are to (a) test the measurement invariance of the SUPPS-P scale between White and racial/ethnic minority groups and (b) determine whether impulsive personality traits differentially relate to substance use outcomes across these groups. Participants were 1,301 young adults and recruited through a large public university or Amazon's Mechanical Turk. Multigroup confirmatory factor analysis concluded strong measurement invariance for Black, Asian American, and Hispanic/Latino groups, each compared with a White group. Most relationships between SUPPS-P traits and substance use did not differ across the groups compared, although two differences emerged with alcohol use. The SUPPS-P can validly and reliably measure impulsive traits in Black, Hispanic/Latino, and Asian American young to middle adults. Previous findings on risk patterns with the SUPPS-P likely generalize to these groups.

Rising Racial Disparities in Opioid Mortality and Undertreatment of Opioid Use Disorder and Mental Health Comorbidities in Virginia

Introduction

There were more than 100,000 fatal drug overdoses in the U.S. in 2021 alone. In recent years, there has been a shift in opioid mortality from predominantly White rural communities to Black urban communities. This study aimed to identify the Virginia communities disproportionately affected by the overdose crisis and to better understand the systemic factors contributing to disparities in opioid mortality.

Methods

Using the state all-payer claims database, state mortality records, and census data, we created a multivariate model to examine the community-level factors contributing to racial disparities in opioid mortality. We used generalized linear mixed models to examine the associations between socioecologic factors and fatal opioid overdoses, opioid use disorder diagnoses, opioid-related emergency department visits, and mental health diagnoses.

Results

Between 2015 and 2020, racial disparities in mortality widened. In 2020, Black males were 1.5 times more likely to die of an opioid overdose than White males (47.3 vs 31.6 per 100,000; p<0.001). The rate of mental health disorders strongly correlated with mortality (β=0.53, p<0.001). Black individuals are not more likely to be diagnosed with opioid use disorder (β=0.01, p=0.002) or with mental health disorders (β= -0.12, p<0.001), despite higher fatal opioid overdoses.

Conclusions

There are widening racial disparities in opioid mortality. Untreated mental health disorders are a major risk factor for opioid mortality. Findings show pathways to address inequities, including early linkage to care for mental health and opioid use disorders. This analysis shows the use of comprehensive socioecologic data to identify the precursors to fatal overdoses, which could allow earlier intervention and reallocation of resources in high-risk communities.

Inequities in the treatment of opioid use disorder: A scoping review

BACKGROUND

Given the lack of access to evidenced-based OUD treatment and the corresponding overdose crisis, researchers must evaluate and report health care inequities involving the treatment of OUD. Additionally, clinicians should be aware of these inequities in the treatment of patients.

METHODS

We carried out a scoping review of the literature regarding health inequities in treatment for OUD in July 2022. The study team retrieved articles published between 2016 and 2021 from MEDLINE and Ovid Embase. After authors received training, screening and data extraction were performed in masked, duplicate fashion. The team screened a total of 3673 titles and abstracts, followed by 172 articles for full-text review. The inequities that we examined were race/ethnicity, sex or gender, income, under-resourced/rural, occupational status, education level, and LGBTQ+. We used Stata 17.0 (StataCorp, LLC, College Station, TX) to summarize data and statistics of the studies within our sample.

RESULTS

A total of 44 studies evaluating inequities in OUD treatment met inclusion criteria. The most common inequity that studies examined was race/ethnicity (34/44 [77.27 %] studies), followed by under-resourced/rural (19/44 [43.18 %] studies), and sex or gender (18/44 [40.91 %] studies). LGBTQ+ (0/44 [0.0 %] studies) was not reported in the included studies. Our results indicate that many historically marginalized populations experience inequities related to access and outcomes in OUD treatment. The included studies in our scoping review occasionally demonstrated inconsistent findings.

CONCLUSIONS

Gaps exist within the literature on health inequities in treatment for OUD. The most examined inequities were race/ethnicity, under-resourced/rural and sex or gender, while studies did not examine LGBTQ+ status. Future research should aim to advance and supplement literature investigating health inequities in OUD treatment to ensure inclusive, patient-centered care.

Population-based examination of substance use disorders and treatment use among US young adults in the National Survey on Drug Use and Health, 2011-2019

Background

Compared with adults of other age groups, young adults are more likely to have substance use disorders (SUDs) but less likely to receive treatment. Untreated SUDs can lead to lethal consequences, particularly deaths related to drug overdose.

Objectives

This study aimed to examine trends and sociodemographic differences in the prevalence and treatment use of SUDs among US young adults aged 18 to 25 in the National Survey on Drug Use and Health 2011-2019.

Methods

Bivariable logistic regression analyses were conducted to examine annual changes in the prevalence and treatment use of SUDs, and multivariable logistic regression was used to examine sociodemographic differences in SUD prevalence and treatment use in the pooled sample of young adults from 2011 to 2019.

Results

From 2011 to 2019, the overall SUD prevalence increased significantly from 5.4% to 6.2%. Cannabis use disorder was the most common SUD annually. Groups with lower prevalence of SUDs included females, young adults aged 22-25, and Hispanic, Black, and Asian participants. Across the survey years, the prevalence of treatment use fluctuated insignificantly between 10.9% and 16.9% among young adults with SUDs, and most young adults received SUD treatment in self-help groups and residential and outpatient rehabilitation facilities. Compared to White participants, treatment use was lower in Hispanic, Black, Asian participants, as well as young adults of two or more races. Young adults covered by Medicaid/CHIP were more likely to use treatment.

Conclusions

This study revealed an alarming level of unmet treatment need and significant disparities in treatment use among young adults with SUDs. To reduce barriers to treatment utilization, more coordinated efforts that leverage policy and structural changes alongside innovations to engage young adults with SUD care are needed.

Alcohol Use Disorder (AUD) in New Jersey (NJ): Disparity in Treatment

Alcohol use disorder (AUD) continues to be a threat to public health due to the associated morbidity, mortality, and social and economic impacts. AUD accounts for greater than 85,000 deaths annually in the United States and greater than 1500 deaths annually in New Jersey (NJ). Despite these associated burdens, the treatment of AUD remains unequal among the population, and it is important to identify the factors influencing the disparity in defined population groups such as NJ to drive the appropriate intervention. Data were retrieved from the 2018 Treatment Episode Data Set-Discharges (TEDS-D) of the United States Substance Abuse and Mental Health Services Administration (SAMHSA). Logistic regression analysis was used to predict the odds of receiving treatment based on socioeconomic factors and the type of treatment received. Compared to Asian or Pacific Islanders in NJ, the American Indian [odds ratio, OR=2.12, 95% confidence interval, CI: 1.95-2.31] has the greatest odds of receiving treatment for AUD, followed by the Black or African American [OR=1.70, 95% CI: 1.65-1.75], the Alaska Native [OR=1.67, 95% CI: 1.42-1.96], and then the White [OR=1.31, 95% CI: 1.12-1.52]. Those who are retired or on disability [OR=0.88, 95% CI: 0.82-0.94] have lower odds of receiving treatment than those on salary or wages. Those with AUD in NJ have a lower odd of receiving detoxification treatment in a 24-h hospital inpatient setting [OR=0.88, 95% CI 0.82-0.95] and a higher odd of receiving detoxification treatment in a 24-h service, free-standing residential setting when compared to the treatment received in a rehabilitation/hospital (other than detoxification) setting. This study shows that disparity exists in relation to the type of treatment received and the setting of treatment for AUD in NJ in addition to disparity based on the sociodemographic factors.

Outcomes of State Targeted/Opioid Response Grants and the Medication First Approach: Evidence of Racial Inequities in Improved Treatment Access and Retention

BACKGROUND

Since 2017, Missouri has increased access to medication for opioid use disorder (OUD) within the State's publicly-funded substance use specialty treatment system through a "Medication First" approach. Results from a statewide assessment of the first year of State Targeted Response implementation showed increases and improvements in overall treatment admissions, medication utilization, and treatment retention. The current study, which focuses on the St. Louis region, the epicenter of Missouri's overdose crisis, examines whether improvements were experienced equally among Black and White clients.

METHODS

This study is a retrospective analysis using state-level billing records for individuals with OUD receiving services through publicly-funded substance use treatment programs between July 1, 2016, and June 30, 2019, with claimed services updated through November 1, 2020. Comparisons across time periods, treatment groups, and Black and White clients were assessed using chi-square tests of independence and multivariate negative binomial regressions.

RESULTS

White individuals in St. Louis experienced larger increases in treatment admissions and utilization of medications for OUD than Black individuals, and Black clients were retained in treatment for shorter lengths of time than White clients.

CONCLUSION

In Missouri, rates of drug overdose deaths are more than three times higher for Black people than White people. Racial inequities in OUD treatment utilization and retention must be intentionally targeted and corrected as one component of reducing this sizable disparity in fatalities.

Psychosis among individuals with methamphetamine use disorder is associated with elevated rates of hospitalizations and emergency department visits across an academic health care system

INTRODUCTION

Methamphetamine (MA) is increasingly available in the United States and manufactured with increasing potency. Although psychosis is a known harm related to MA use, we know little about the clinical outcomes and prognosis of individuals who use MA and experience psychosis. Some evidence exists that psychosis among people who use methamphetamine leads to a high utilization of emergency and acute inpatient services, but the extent of this use is unclear.

METHODS

Using an electronic health record (EHR) database, this study assessed acute care visits of individuals receiving diagnostic codes of the following disorders: methamphetamine use disorder with undifferentiated psychosis (MUDp), schizophrenia (MUDs) and no history of psychosis (MUD) in addition to individuals without MUD diagnosis but with diagnoses of either undifferentiated psychosis (Psy) or schizophrenia (Scz) from 2006 to 2019. The study explored potential clinical risk factors associated with rate of acute care visits.

RESULTS

Receiving diagnoses of psychotic disorders and MUD were both associated with high rates of acute care utilization. The incidence rate ratio (IRR) was highest in the MUDp group 6.30 (95 % CI: 5.73, 6.93) followed by the MUDs group 4.03 (95 % CI: 3.87, 4.20), the Psy group 3.77 (95 % CI: 3.45, 4.11), the Scz group 3.11 (95 % CI: 2.99, 3.23), and the MUD group 2.17 (95 % CI: 2.09, 2.25). Receiving another SUD diagnosis was identified as a risk factor for acute care visits in the MUDp group, and mood and anxiety disorder diagnoses were a risk factor in the MUDs group.

CONCLUSIONS

In a general health care system, individuals receiving diagnoses of MUD and co-occurring psychotic disorders were observed to have particularly high rates of acute care service utilization, suggesting a high degree of disease burden and the need for development of targeted treatment interventions with both MUD and psychosis.

Patterns of opioid use behaviors among patients seen in the emergency department: Latent class analysis of baseline data from the POINT pragmatic trial

INTRODUCTION

The nation's overdose epidemic has been characterized by increasingly potent opioids resulting in more emergency department (ED) encounters over time. ED-based opioid use interventions are growing in popularity; however, they tend to treat people who use opioids as a homogenous population. The current study sought to understand heterogeneity among people who use opioids who encounter the ED by identifying qualitatively different subgroups among participants in an opioid use intervention clinical trial at baseline and examining associations between subgroup membership and multiple correlates.

METHODS

Participants were from a larger pragmatic clinical trial of the Planned Outreach, Intervention, Naloxone, and Treatment (POINT) intervention (n = 212; 59.2 % male, 85.3 % Non-Hispanic White, mean age = 36.6 years). The study employed latent class analysis (LCA) using five indicators of opioid use behavior: preference for opioids, preference for stimulants, usually use drugs alone, injection drug use, and opioid-related problem at ED encounter. Correlates of interest included participants' demographics, prescription histories, health care contact histories, and recovery capital (e.g., social support, naloxone knowledge).

RESULTS

The study identified three classes: (1) noninjecting opioid preferers, (2) injecting opioid and stimulant preferers, and (3) social nonopioid preferers. We identified limited significant differences in correlates across the classes: differences existed for select demographics, prescription histories, and recovery capital but not for health care contact histories. For example, members of Class 1 were the most likely to be a race/ethnicity other than non-Hispanic White, oldest on average, and most likely to have received a benzodiazepine prescription, whereas members of Class 2 had the highest average barriers to treatment and members of Class 3 were the least likely to have been diagnosed with a major mental health illness and had the lowest average barriers to treatment.

CONCLUSIONS

LCA identified distinct subgroups among POINT trial participants. Knowledge of such subgroups assists with the development of better-targeted interventions and can help staff to identify the most appropriate treatment and recovery pathways for patients.

An evaluation of the association between specific post-overdose care services in emergency departments and subsequent treatment engagement

Objective

The objective of this study was to estimate the association between receipt of specific post-overdose care services in the emergency department (ED) and subsequent engagement in treatment for opioid use disorder (OUD) after discharge.

Methods

This was a retrospective cohort study of Rhode Island residents treated at 1 of 4 EDs for opioid overdose who were not engaged in OUD treatment and were discharged home (May 2016-April 2021). Electronic health record data were used to identify ED services received, and state administrative data were used to define subsequent engagement in OUD treatment within 30 days. Multivariable conditional logistic regression was used to estimate the association between ED services received and subsequent treatment engagement.

Results

Overall, 1008 people not engaged in OUD treatment were treated at study EDs for opioid overdose and discharged home, of whom 146 (14%) subsequently engaged in OUD treatment within 30 days. Most patients were aged 25 to 44 years (59%) and non-Hispanic White (69%). Receipt of behavioral counseling in the ED (adjusted odds ratio [aOR] = 1.79, 95% confidence interval [CI] = 1.18-2.71) and initiation of buprenorphine treatment in/from the ED (aOR = 5.86, 95% CI = 2.70-12.71) were associated with treatment engagement. Receipt of a take-home naloxone kit or naloxone prescription and referral to treatment at discharge were not associated with treatment engagement. Overall, 49% of patients received behavioral counseling in the ED, and 3% initiated buprenorphine in/from the ED.

Conclusion

Strategies for increasing provision of behavioral counseling and initiation of buprenorphine in the ED may be useful for improving subsequent engagement in OUD treatment after discharge.

Intimate partner violence, substance use, and health comorbidities among women: A narrative review

Exposure to intimate partner violence (IPV), including physical, sexual, and psychological violence, aggression, and/or stalking, impacts overall health and can have lasting mental and physical health consequences. Substance misuse is common among individuals exposed to IPV, and IPV-exposed women (IPV-EW) are at-risk for transitioning from substance misuse to substance use disorder (SUD) and demonstrate greater SUD symptom severity; this too can have lasting mental and physical health consequences. Moreover, brain injury is highly prevalent in IPV-EW and is also associated with risk of substance misuse and SUD. Substance misuse, mental health diagnoses, and brain injury, which are highly comorbid, can increase risk of revictimization. Determining the interaction between these factors on the health outcomes and quality of life of IPV-EW remains a critical need. This narrative review uses a multidisciplinary perspective to foster further discussion and research in this area by examining how substance use patterns can cloud identification of and treatment for brain injury and IPV. We draw on past research and the knowledge of our multidisciplinary team of researchers to provide recommendations to facilitate access to resources and treatment strategies and highlight intervention strategies capable of addressing the varied and complex needs of IPV-EW.

Perspectives on the therapeutic potential of MDMA: A nation-wide exploratory survey among substance users

Background

Alcohol and other substance use disorders are commonly associated with post-traumatic stress disorder (PTSD), and the presence of these comorbidities is associated with worse treatment outcomes. Additionally, disparities in substance and PTSD prevalence have been associated with minority races and ethnicities, and minorities have been shown to be less likely to engage in treatment. Psychedelic-assisted treatments, including 3,4-methylenedioxymethamphetamine (MDMA), have shown preliminary trans-diagnostic effectiveness, however it is unknown how individuals with substance use disorders view the therapeutic potential of MDMA therapy. Previous studies have also shown that minority races and ethnicities are under-represented in the MDMA trials, leading to concerns about inequitable access to clinical treatment.

Methods

To explore demographic characteristics related to patient-level perspectives on the therapeutic potential of MDMA-assisted therapy, this study describes data from a nationwide, cross-sectional survey of 918 individuals self-reporting criteria consistent with alcohol or substance use disorders.

Results

Overall, a majority of individuals reported support for medical research of MDMA (68.1%), belief that MDMA-assisted therapy might be a useful treatment (70.1%), and willingness to try MDMA-assisted therapy if it were determined to be an appropriate treatment for them (58.8%). No race or ethnicity differences were found in support for further research or belief in effectiveness, however there were small disparities in terms of willingness to try MDMA-assisted therapy and concerns related to use of this treatment approach.

Conclusion

These results provide insights and future directions as the field of psychedelic-assisted therapy seeks to provide equitable access to clinical care and to diversify research participation.

Equine-assisted services for individuals with substance use disorders: a scoping review

The implementation of equine-assisted services (EAS) during treatment for psychological disorders has been frequently documented; however, little is known about the effect of EAS on outcomes for populations with substance use disorder (SUD). The purpose of this scoping review was to synthesize existing literature reporting the effects of EAS when incorporated into SUD treatment. This review followed guidelines in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) checklist for scoping reviews. A search of four databases (MEDLINE/PubMed, PsycINFO, the Cumulative Index to Nursing and Allied Health Literature (CINAHL), and Academic OneFile) identified studies reporting quantitative and/or qualitative data for an EAS intervention that was implemented among a population receiving treatment for and/or diagnosed with SUD. Of 188 titles, 71 underwent full-text assessment and six met inclusion criteria. Three additional articles were identified through other sources. Quantitative data suggested a potential positive effect of EAS on SUD treatment retention and completion as well as participants' mental health; however, studies were limited by small sample sizes. Qualitative data indicated that in addition to participants developing bonds with the horses and perceiving EAS as welcomed breaks from traditional treatment, they experienced increased self-efficacy, positive emotional affect, and SUD treatment motivation. Due to methodological limitations and an overall dearth of available studies, the effectiveness of EAS as adjuncts to SUD treatment is inconclusive. Additional research is necessary before supporting broad implementation of EAS as adjuncts to SUD treatment.

Exploring the provider and organization level barriers to medication for opioid use disorder treatment for Black Americans: A study protocol

Objectives

This study seeks to examine the provider and organizational factors that could be limiting the treatment of Opioid Use Disorder (OUD) for Black Americans in Texas. Formative research at the provider and organizational level will assist in understanding the current facilitators, potential barriers, and capacity for OUD treatment for Black Americans.

Study design

Using the exploration phase of the Explore, Preparation, Implementation, Sustainment (EPIS) framework, the project will be a formative assessment of local factors that influence Medication for OUD (MOUD) treatment availability for Black Americans to guide the design of a culturally and locally relevant multi-level intervention strategy.

Methods

and analysis: This project will utilize emergent mixed methods to identify and clarify the problems that are obstructing treatment for Black patients with OUD. First, the perspectives of individual providers in their openness and willingness to provide MOUD treatment to Black Americans diagnosed with OUD will be explored through in-depth interviews. The organizational capacity factors associated with increased availability to treatment for Black American OUD patients will be examined with the organizational leaders using an exploratory sequential mixed-methods design. Leader and program managers of organizations that provide MOUD will be invited to participate in an online survey, with the option to participate in a follow-up in-depth interview. All qualitative data from the provider and organization staff interviews will be analyzed with a thematic analysis approach. The analysis of the two different types of qualitative data will be analyzed together, as a form of triangulation.

Conclusions

This project will assess the understandings of individual providers as well as the organizational-level awareness of the cultural contexts of MOUD intervention for Black Americans. This formative research seeks to highlight the current status of the opioid crisis in the Black community, and what additional supports are needed.

Cumulative exposure to traumatic events and craving among women in residential treatment for substance use disorder: The role of emotion dysregulation and mindfulness disposition

Objective

Strong evidence links exposure to traumatic life events with subsequent substance use disorders (SUD). Compared to men, women in SUD treatment are more likely to have a history of trauma, characterized in part by emotion dysregulation known to negatively influence treatment outcomes. Existing research has been conducted with predominantly male and non-Hispanic White samples, with an emphasis on adverse childhood experiences. Little is known about how exposure to cumulative traumatic events across the lifespan affects emotion dysregulation and how this may influence craving, particularly among racial and ethnic minoritized women with SUD. Mindfulness disposition may serve as a protective factor that could buffer the impact of trauma exposure and emotion dysregulation on substance use craving among underrepresented minoritized women with SUD. This study examined the association between cumulative exposure to traumatic events, emotion dysregulation, and mindfulness disposition on substance use craving in a sample of predominantly Hispanic and non-Hispanic Black women in residential treatment for SUD.

Method

Cross-sectional data were analyzed for a baseline sample of 241 women (56.96% Hispanic, 20.7% non-Hispanic White, 20.7% non-Hispanic Black; age: M = 32.11) entering a SUD residential treatment facility who agreed to participate in a parent randomized controlled trial.

Results

Findings indicated that greater cumulative exposure to traumatic events and emotion dysregulation were associated with higher levels of craving. Cumulative traumatic event exposure was indirectly associated with higher craving via lower levels in the mindfulness dimension of acting with awareness. Interaction effects also revealed greater exposure to traumatic events was associated with higher levels of craving among women with low and average (but not high) levels of mindfulness disposition.

Conclusion

These findings provide insight into the potential benefits of targeting emotion regulation and mindfulness-building strategies such as acting with awareness in interventions among racial-ethnically diverse women with SUD. These strategies may be particularly beneficial among those that have experienced extensive histories of trauma exposure. Overall, knowledge gained from the present study can be particularly valuable towards informing treatment models in minoritized groups that currently experience disparities in treatment utilization and outcomes.

Use of machine learning to examine disparities in completion of substance use disorder treatment

The objective of this work is to examine disparities in the completion of substance use disorder treatment in the U.S. Our data is from the Treatment Episode Dataset Discharge (TEDS-D) datasets from the U.S. Substance Abuse and Mental Health Services Administration (SAMHSA) for 2017-2019. We apply a two-stage virtual twins model (random forest + decision tree) where, in the first stage (random forest), we determine differences in treatment completion probability associated with race/ethnicity, income source, no co-occurrence of mental health disorders, gender (biological), no health insurance, veteran status, age, and primary substance (alcohol or opioid). In the second stage (decision tree), we identify subgroups associated with probability differences, where such subgroups are more or less likely to complete treatment. We find the subgroups most likely to complete substance use disorder treatment, when the subgroup represents more than 1% of the sample, are those with no mental health condition co-occurrence (4.8% more likely when discharged from an ambulatory outpatient treatment program, representing 62% of the sample; and 10% more likely for one of the more specifically defined subgroups representing 10% of the sample), an income source of job-related wages/salary (4.3% more likely when not having used in the 30 days primary to discharge and when primary substance is not alcohol only, representing 28% of the sample), and white non-Hispanics (2.7% more likely when discharged from residential long-term treatment, representing 9% of the sample). Important implications are that: 1) those without a co-occurring mental health condition are the most likely to complete treatment, 2) those with job related wages or income are more likely to complete treatment, and 3) racial/ethnicity disparities persist in favor of white non-Hispanic individuals seeking to complete treatment. Thus, additional resources may be needed to combat such disparities.

Treatment Outcomes Among Black Adults Receiving Medication for Opioid Use Disorder

Largely due to structural racism, Black people with substance use disorder have worse outcomes than their White counterparts. The opioid epidemic has amplified these racial disparities. Little is known about strengths that buffer against the systemic issues that disproportionately impact Black adults with opioid use disorder (OUD), particularly those receiving buprenorphine for OUD. The objectives of this study are to (1) assess psychosocial and clinical predictors of OUD outcomes and (2) explore differences in OUD outcomes by gender among a sample of Black adults receiving buprenorphine. This is a secondary data analysis of a cross-sectional survey and medical record review with a convenience sample recruited from an addiction medicine clinic. Analyses included Black participants who provided at least one urine drug test during the study period (n = 98). Prospective 6-month OUD outcomes (treatment retention, substance use recurrence, and buprenorphine continuation) were abstracted from the medical record. Univariate analyses explored differences by gender. Multivariate regressions assessed predictors of OUD outcomes. Participants were 53% women and middle-aged (47 ± 12 years). The majority (59%) had been in treatment for at least 1 year at study enrollment. Substance use recurrence was common, but many individuals remained in treatment. OUD outcomes did not differ by gender. Older age and absence of injection opioid use history were significant predictors of treatment retention and buprenorphine continuation. When provided access to high-quality treatment, Black adults with OUD demonstrate positive outcomes. Addressing structural racism and developing culturally informed treatment interventions are necessary to improve access to high-quality care for this community.

Racial and ethnic differences in alcohol, cannabis, and illicit substance use treatment: a systematic review and narrative synthesis of studies done in the USA

Reports from uncontrolled trials and surveys suggest that there are disparities in substance-use outcomes for minoritised racial and ethnic populations, yet few of these disparities have emerged from randomised clinical trials (RCTs). We conducted a systematic review of RCTs published in English of Black or Latinx adults with any non-nicotine substance use disorder that reported rates of treatment initiation, engagement, or substance-use outcome by race or ethnicity. Study quality was assessed by the Joanna Briggs Institute appraisal tool and a Yale internally validated quality assessment. Of the 5204 studies, 50 RCTs met the inclusion criteria, all done in the USA, 24 compared treatment initiation, engagement, or outcome across races or ethnicities and 26 compared these same factors within a race. Few RCTs have reported outcomes specifically for Black or Latinx populations, with nine reporting significant differences by race or ethnicity. Significant differences were found in all studies that evaluated the baseline differences in social determinants. This Review explains the need for optimisation of RCTs to inform the design, delivery, and dissemination of treatment to historically excluded communities.

Demographic and geographic shifts in the preferred route of methamphetamine administration among treatment cases in the US, 2010-2019

BACKGROUND

Methamphetamine use disorder has increased rapidly in the past decade. Injecting is also increasing and has multifaceted implications for disease severity, overall health, and treatment outcomes, but less is known about where or among whom injecting has shifted the most. This national study assessed temporal changes in the preferred route of methamphetamine administration by race/ethnicity and within urban/rural geographies.

METHODS

We used the Treatment Episode Dataset-Discharges (2010-2019) to identify outpatient treatment cases who reported methamphetamine as their primary drug of choice at admission (N = 531,799; 2010 n = 33,744; 2019 n = 81,885). We created a combined variable indicating race/ethnicity and the rural/urban location of treatment, and used logistic regression to model the predicted probability of cases reporting injection, smoking, or snorting as their preferred route of administration. We included an interaction term to determine differences over time (race/ethnicity/rurality*year).

RESULTS

Across all years, smoking methamphetamine was the most common route of administration (66%), followed by injection (24%) and snorting (10%). Over time and among most sub-groups, the rates of injection increased while the rates of smoking decreased. Compared to 2010, the odds of injecting methamphetamine in 2019 were highest among Black cases in urban areas (aOR = 2.30, 95% CI = 1.76-3.00, p < 0.0001).

CONCLUSION

Increasing methamphetamine injection was most pronounced among Black treatment cases in more urban areas, which is in contrast to the longstanding narrative that methamphetamine is a White and rural drug. Methamphetamine prevention, treatment, and harm reduction should target populations with high injection prevalence and growing incidence.