Alcohol, marijuana, and opioid use disorders: 5-Year patterns and characteristics of emergency department encounters

Screening problematic use of substances among young subjects attending an emergency department, and subsequent treatment seeking

INTRODUCTION

Young individuals constitute a key population for the screening of problematic use of substances (PUS), but they are not likely to seek support and are hard to reach. Targeted screening programs should thus be developed in the places of care they may attend for other reasons, including emergency departments (EDs). We aimed to explore the factors associated with PUS in young people attending an ED; we measured the subsequent access to addiction care after ED screening.

METHODS

This was a prospective interventional single-arm study which included any individual aged between 16 and 25 years who attended the main ED of Lyon, France. Baseline data were sociodemographic characteristics, PUS status using self-report questionnaires and biological measures, level of psychological health, and history of physical/sexual abuse. Quick medical feedback was provided to the individuals presenting a PUS; they were advised to consult an addiction unit, and contacted by phone at three months to ask whether they had sought treatment. Baseline data were used to compare PUS and non-PUS groups using multivariable logistic regressions, to provide adjusted odds ratios (aORs) and 95% confidence intervals (95% CI), with age, sex, employment status, and family environment as the adjustment variables. The characteristics of PUS subjects who subsequently sought treatment were also assessed using bivariable analyses.

RESULTS

In total, 460 participants were included; 320 of whom (69.6%) were presenting current substance use, and 221 (48.0%) with PUS. Compared to non-PUS individuals, PUS ones were more likely to be males (aOR=2.06; 95% CI [1.39-3.07], P<0.001), to be older (per one-year increase: aOR=1.09; 95% CI [1.01-1.17], P<0.05), to have an impaired mental health status (aOR=0.87; 95% CI [0.81-0.94], P<0.001), and to have a history of sexual abuse (aOR=3.33; 95% CI [2.03-5.47], P<0.0001). Only 132 (59.7%) subjects with PUS could be reached by phone at 3 months, among whom only 15 (11.4%) reported having sought treatment. Factors associated with treatment seeking were social isolation (46.7% vs. 19.7%; P=0.019), previous consultation for psychological disorders (93.3% vs. 68.4%; P=0.044), lower mental health score (2.8±1.6 vs. 5.1±2.6; P<0.001), and post-ED hospitalization in a psychiatric unit (73.3% vs. 19.7%; P<0.0001).

DISCUSSION/CONCLUSION

EDs are relevant places to screen PUS in youth, but the level of seeking further treatment needs to be substantially improved. Offering systematic screening during an emergency room visit could allow for more appropriate identification and management of youth with PUS.

Concurrent Alcohol and Opioid Intoxication in Emergency Department Patients Leads to Greater Resource Utilization

Background: Concurrent alcohol intoxication can complicate emergency department (ED) presentations for opioid-related adverse events. We sought to determine if there was a difference in resource utilization among patients who presented to the ED with concurrent opioid and alcohol intoxication compared to opioid intoxication alone. Methods: Using linked state-wide databases from the Maryland Healthcare Cost and Utilization Project (HCUP), we identified patients with a diagnosis of opioid intoxication treated in the ED from 2016 to 2018. We measured healthcare utilization for each patient in the ED settings for one year after the initial ED visit and estimated direct costs. We performed logistic regression comparing patients presented with co-intoxication to those without. Results: Of 12,295 patients who presented to the ED for opioid intoxication during the study period, 703 (5.7%) had concurrent alcohol intoxication. Patients with co-intoxication had more recurrent ED visits (340 vs 247.4 per 1000 patients, p < 0.05), higher index ED visit admission rates (26.9% vs 19.4%, p < 0.001), but similar overall costs ($3736 vs $2861, p < 0.05) at one year. Co-intoxication was associated with suicidal ideation (OR = 1.58, 95% CI 1.51-1.65), high zip code income (OR = 1.16, 95% CI 1.12-1.21), and higher rates of intoxication with all classes of drugs analyzed (p < 0.001). Conclusion: Our study demonstrated that mental health disorders, socioeconomic status, and increased ED utilization are associated with co-intoxication of opioids and alcohol presenting to the ED. Further research is needed to elucidate factors responsible for the increased resource use in this population.

Peer recovery coaches and emergency department utilization in patients with substance use disorders

BACKGROUND

Although Emergency Departments (ED) frequently provide care for patients with substance use disorders (SUD), there are many barriers to connecting them with appropriate long-term treatment. One approach to subside risk in this population is the Peer Recovery Coach (PRC). PRCs are individuals with a lived experience of the rehabilitation process and are a powerful resource to bridge this gap in care by engaging patients and their families and providing system navigation, self-empowerment for behavior change, and harm reduction strategies. The purpose of this project is to describe an ED-based PRC program, evaluating its feasibility and efficacy.

METHODS

This was a retrospective quality improvement project conducted at 3 suburban hospitals. All patients arriving to the ED were screened with a brief questionnaire in triage and patients identified as a high-risk had referral placed to a PRC if the patient consented. The PRC met with the patient at the ED bedside if possible. The PRC program members collected prospective data on patient engagement with the PRC at 30, 60, and 90 days post ED encounter. Using the EMR we identified the number of subsequent ED visits at 30, 60, and 90 days (for both medical and substance use disorder-related visits) from the index PRC visit.

RESULTS

There were 448 individuals identified and included in this analysis between January 1, 2019 and June 30, 2020, of which 292 (66%) were male and the mean age was 44 (range 18-80). Most patients identified alcohol as the primary substance they used (289, 65%), followed by heroin/opiates (20%). At 30, 60, and 90 days, there were 110 (25%), 79 (18%), and 71 (16%) patients who were still actively engaged in the program, respectively. Among all patients in the cohort, there was essentially no decrease in mean visits before versus after the PRC engagement visit. However, among patients who had at least one prior ED visit, there were significant differences in mean visits across all visit-types: for patients with 1 prior ED visit, 90 day mean decrease in visits = 1.0 visits (95% CI 0.7-1.2), for patients with 5+ prior ED visits, 90 day mean decrease in visits = 3.6 visits (95% CI 2.4-4.8).

CONCLUSION

We describe the implementation of an ED-based PRC program for patients with substance use disorders. While we demonstrated that it is feasible for the PRC to engage the patient while in the ED, there was poor follow-up with the program outpatient. For patients with at least one previous SUD visit to the ED, there was a statistically significant reduction in ED utilization after engaging with a PRC while in the ED, suggesting this may be a population that could be targeted to link patients to long term care and decrease repeated ED utilization.

Factors related to substance use treatment attendance after peer recovery coach intervention in the emergency department

Introduction

Brief intervention with peer recovery coach support has been used to generate referrals to substance use disorder treatment from the emergency department (ED). This retrospective study evaluated factors associated with successful linkage to treatment following brief intervention in the ED.

Methods

Data were extracted from the electronic health record for patients who were referred to substance use treatment from the ED and for whom follow-up data regarding treatment attendance was available (n=666). We examined associations between demographic and insurance variables, substance use, mental health diagnosis, prior abstinence, and stage of change with successful linkage to substance use treatment after ED referral.

Results

The sample was majority male (68%), White (62%), and had a mean age of 43 years (SD=12). Medicaid was the most common insurance (49%) followed by employer/private (34%). Multivariable logistic regression determined patients with Medicaid (OR=2.94, 95% CI:2.09-4.13, p=<.001), those who had a documented alcohol use disorder diagnosis (OR=1.59, 95% CI:1.074-2.342, p=.02), and those in the "Action" stage of change (OR=2.33, 95% CI:1.47-3.69, p=<.001) had greater odds of being successfully linked to treatment.

Conclusions

These results identify characteristics of patients available in the health record to determine who is more likely or less likely to attend substance use treatment following ED referral. Given appropriate screening, this information could be used to direct standard care resources to those with high likelihood of treatment attendance and strengthen follow-up interventions with peer recovery coaches for those with lower likelihood of treatment attendance.

Cost-Effectiveness of Motivational Interviewing to Reduce Alcohol and Cannabis Use Among Patients With Depression

OBJECTIVE

Motivational interviewing (MI) is a promising intervention for helping patients with mental health problems reduce their substance use. Examining the cost-effectiveness of MI and associations between MI and the use of health services can inform appropriate intervention strategies for these patients.

METHOD

Kaiser Permanente adult patients with depression symptoms (Patient Health Questionnaire [PHQ-9] score > 5) seen in outpatient psychiatry (N = 302) who reported unhealthy alcohol use or other substance use (primarily cannabis) were randomized to three sessions of MI (intervention) or printed literature (control) with telephone follow-up interviews at 6 and 12 months. Cost-effectiveness analyses compared intervention costs associated with 30-day abstinence from unhealthy alcohol use (i.e., any days of ≥4/≥5 drinks for women/men) and cannabis use. Multivariable analyses examined associations between MI and healthcare utilization at 12 months (emergency department, primary care, psychiatry, and addiction treatment).

RESULTS

MI resulted in greater likelihood of abstaining from unhealthy alcohol use (70.0% vs. 60.2%, p < .01) and cannabis use (74.6% vs. 63.9%, p < .01) than the control at 6 months, but outcomes did not differ at 12 months. The 6-month incremental cost-effectiveness ratios were $1,207-$1,523 per abstinent patient for unhealthy drinking and $1,040-$1,313 per abstinent patient for cannabis. There were no differences between groups on health service utilization.

CONCLUSIONS

MI cost more than the control condition but yielded better outcomes at 6 months; MI had no relationship to health service utilization. Findings can inform implementation of substance use interventions through understanding MI's potential clinical and cost impact and its relationship to health services use.

COVID-19 Impact on Australian Patients with Substance Use Disorders: Emergency Department Admissions in Western Sydney before Vaccine Roll Out

Background: In this study, we determined the impact of the COVID-19 pandemic on Western Sydney patients with substance use disorders (SUD) by comparing emergency department (ED) admission rates before and after the onset of the COVID-19 pandemic and before the rollout of COVID-19 vaccination. Methods: ED admission data for patients with SUD were retrieved from the local electronic medical record (eMR) on the hospital central database. ED data collected from 25 January to 25 July 2019 (before the COVID-19 pandemic) were compared with data from 25 January to 25 July 2020 (early pandemic). ED admission reasons were categorised based on the presenting complaints and ED diagnoses. Results: Despite an overall reduction in ED admissions during the early pandemic, compared to the pre-pandemic period, admissions for patients with SUD increased significantly (1.7% to 3.4%, p < 0.01). ED admission rates related to infection (0.05% to 0.12%, p < 0.01), local infection (0.02% to 0.05%, p < 0.01), trauma (0.06% to 0.12%, p < 0.01), alcohol (0.01% to 0.03%, p < 0.05), and other issues (0.06% to 0.10%, p < 0.05) increased significantly among Indigenous patients with SUD. ED admission rates related to drugs (0.12% to 0.39%, p < 0.01), infection (0.21% to 0.34%, p < 0.01), local infection (0.07% to 0.18%, p < 0.01), gastrointestinal (0.15% to 0.23%, p < 0.05), trauma (0.14% to 0.25%, p < 0.01), alcohol (0.36% to 0.74%, p < 0.01), and ‘other’ issues (0.47% to 0.91%, p < 0.01) increased significantly among non-Indigenous patients with SUD. Four cases of COVID-19 were reported among these patients. Conclusions: There was an increase in ED admissions for patients with SUD in the initial six months of the COVID-19 pandemic (before vaccine rollout), mainly for drugs, systemic infection, local infection, trauma, and alcohol-related reasons. Now that most people in New South Wales have been vaccinated against COVID-19, a further study is needed to quantify the effect of the pandemic on patients with SUD in the post-vaccine era.

Chronic health conditions, acute health events, and healthcare utilization among adults over age 50 in Hawai'i who use cannabis: A matched cohort study

BACKGROUND

Research on cannabis-related health outcomes in diverse older adults is limited. The current study utilized a matched cohort study design to compare older adults in Hawai'i with identified cannabis diagnoses and matched controls on chronic health conditions, acute health events, and healthcare utilization from 2016 to 2020.

METHOD

Patients age 50 + were identified using ICD-10 diagnostic codes for cannabis use, abuse, and dependence using electronic health record data from an integrated health system (Kaiser Permanente Hawai'i). Those with cannabis diagnoses (n = 275) were compared to matched non-using controls (n = 275; based on age, sex) on chronic health conditions (coronary heart disease, hypertension, COPD, chronic non-cancer pain), acute health events (myocardial infarction, respiratory symptoms, stroke, persistent or cyclic vomiting, injuries), and healthcare utilization (outpatient, inpatient, and emergency department visits) following case identification for two years.

RESULTS

Participants were 19.3% Native Hawaiian/Pacific Islander, 24.4% Asian, 47.8% White, and 8.5% Other/Unknown, with an average age of 62.8 years (SD=7.3). Adjusting for covariates as possible, participants with a cannabis diagnosis had significantly greater risk of coronary heart disease, chronic non-cancer pain, stroke, myocardial infarction, cyclic vomiting, and injuries, over time, compared to controls. Cannabis use was associated with any and greater frequency of outpatient, inpatient, and emergency department visits.

CONCLUSIONS

In a diverse sample, older adults who used cannabis had worse health conditions and events and used more health services over a two-year period. Future studies should evaluate cannabis-related health outcomes, effects of cannabis problem severity, as well as implications for healthcare in aging populations.

Predictors of no, low and frequent emergency department use for any medical reason among patients with cannabis-related disorders attending Quebec (Canada) addiction treatment centres

INTRODUCTION

Patients with substance-related disorders and mental disorders (MD) contribute substantially to emergency department (ED) overcrowding. Few studies have identified predictors of ED use integrating service use correlates, particularly among patients with cannabis-related disorders (CRD). This study compared predictors of low (1-2 visits/year) or frequent (3+ visits/year) ED use with no ED use for a cohort of 9836 patients with CRD registered at Quebec (Canada) addiction treatment centres in 2012-2013.

METHODS

This longitudinal study used multinomial logistic regression to evaluate clinical, sociodemographic and service use variables from various databases as predictors of the frequency of ED use for any medical reason in 2015-2016 among patients with CRD.

RESULTS

Compared to non-ED users with CRD, frequent ED users included more women, rural residents, patients with serious MD and chronic CRD, dropouts from programs in addiction treatment centres and with less continuity of physician care. Compared with non-users, low ED users had more common MD and there more workers than students.

DISCUSSION AND CONCLUSIONS

Multimorbidity, including MD, chronic physical illnesses and other substance-related disorders than CRD, predicted more ED use and explained frequent use of outpatient services and prior specialised acute care, as did being 12-29 years, after controlling for all other covariates. Better continuity of physician care and reinforcement of programs like assertive community or integrated treatment, and chronic primary care models may protect against frequent ED use. Strategies like screening, brief intervention and treatment referral, including motivational therapy for preventing treatment dropout may also be expanded to decrease ED use.

Profiles of individuals with cannabis-related disorders

Background: Profiles of individuals with cannabis-related disorders (CRD) in specialized addiction treatment centers serving high-need patients have not been identified. This longitudinal study developed a typology for 9,836 individuals with CRD attending Quebec (Canada) addiction treatment centers in 2012-2013. Methods: Data on sociodemographic, clinical and service use variables were extracted from several databases for the years 1996-1997 to 2014-2015. Individual profiles were produced using Latent Class Analysis and compared predicting health outcomes on emergency department (ED) use, hospitalizations and suicidal behaviors for 2015-2016. Results: Six profiles were identified: 1-Older individuals, many living in couples and working, with moderate health problems, receiving intensive general practitioner (GP) care and high continuity of physician care; 2-Older individuals with chronic CRD, multiple social and health problems, and low health service use (chronic CRD referred to experiencing CRD for several years; social problems related to homelessness, unemployment, having criminal records or living alone); 3-Students with few social and health problems, and low health service use; 4-Young adults, many working, with few health problems, least health service use and continuity of physician care; 5-Youth, many working but some criminal offenders, with 1 or 2 years of CRD, few health problems and high addiction treatment center use; and 6-Older individuals with chronic CRD and multiple social and health problems, high health service use and continuity of physician care. Profiles 6 and 2 had the worst health outcomes. Conclusions: For Profiles 2 to 5, outreach and motivational services should be prioritized, integrated health and criminal justice services for profile 5 and, for Profiles 2 and 6, assertive community treatments. Screening, brief intervention and referrals to addiction treatment centers may also be encouraged for individuals with CRD, particularly those in Profile 2. This cohort had high social and health needs relative to services received, suggesting continued need for care.

Frequencies of emergency department use and hospitalization comparing patients with different types of substance or polysubstance-related disorders

Background

This study measured emergency department (ED) use and hospitalization for medical reasons among patients with substance-related disorders (SRD), comparing four subgroups: cannabis-related disorders, drug-related disorders other than cannabis, alcohol-related disorders and polysubstance-related disorders, controlling for various clinical, sociodemographic and service use variables.

Methods

Clinical administrative data for a cohort of 22,484 patients registered in Quebec (Canada) addiction treatment centers in 2012-13 were extracted for the years 2009-10 to 2015-16. Using negative binomial models, risks of frequent ED use and hospitalization were calculated for a 12-month period (2015-16).

Results

Patients with polysubstance-related disorders used ED more frequently than other groups with SRD. They were hospitalized more frequently than patients with cannabis or other drug-related disorders, but less frequently than those with alcohol-related disorders. Patients with alcohol-related disorders used ED more frequently than those with cannabis-related disorders and underwent more hospitalizations than both patients with cannabis-related and other drug-related disorders. Co-occurring SRD-mental disorders or SRD-chronic physical illnesses, more years with SRD, being women, living in rural territories, more frequent consultations with usual general practitioner or outpatient psychiatrist, and receiving more interventions in community healthcare centers increased frequency of ED use and hospitalization, whereas both adverse outcomes decreased with high continuity of physician care. Behavioral addiction, age less than 45 years, living in more materially deprived areas, and receiving 1-3 interventions in addiction treatment centers increased risk of frequent ED use, whereas living in semi-urban areas decreased ED use. Patients 25-44 years old receiving 4+ interventions in addiction treatment centers experienced less frequent hospitalization.

Conclusion

Findings showed higher risk of ED use among patients with polysubstance-related disorders, and higher hospitalization risk among patients with alcohol-related disorders, compared with patients affected by cannabis and other drug-related disorders. However, other variables contributed substantially more to the frequency of ED use and hospitalization, particularly clinical variables regarding complexity and severity of health conditions, followed by service use variables. Another important finding was that high continuity of physician care helped decrease the use of acute care services. Strategies like integrated care and outreach interventions may enhance SRD services.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13011-021-00421-7.

Use of health care services by people with substance use disorders in Belgium: a register-based cohort study

Background

The objective of the study was to describe the frequencies of health-care utilization by people with substance use disorder (SUD), including contacts with general practitioners (GP), psychiatrists, emergency departments (ED) and hospital admissions and to compare this frequency to the general population.

Methods

Data from the national register of people who were in treatment for SUD between 2011 and 2014 was linked to health care data from the Belgian health insurance (N = 30,905). Four comparators were matched on age, sex and place of residence to each subject in treatment for SUD (N = 123,620). Cases were further divided in five mutually exclusive categories based on the main SUD (opiates, crack/cocaine, stimulants, cannabis and alcohol). We calculated the average number of contacts with GP, psychiatrists and ED, and hospital admissions per person over a ten year period (2008–2017), computed descriptive statistics for each of the SUD and used negative binomial regression models to compare cases and comparators.

Results

Over the ten-year period, people in treatment for SUD overall had on average 60 GP contacts, 3.9 psychiatrist contacts, 7.8 visits to the ED, and 16 hospital admissions. Rate ratios, comparing cases and corresponding comparators, showed that people in treatment for SUD had on average 1.9 more contacts with a GP (95 % CI 1.9-2.0), 7.4 more contacts with a psychiatrist (95 % CI 7.0-7.7), 4.2 more ED visits (95 % CI 4.2–4.3), and 6.4 more hospital admissions (95 % CI 6.3–6.5).

Conclusions

The use of health services for people with SUD is between almost two (GP) and seven times (psychiatrist) higher than for comparators. People in treatment for alcohol use disorders use health care services more frequently than people in treatment for other SUD. The use of health services remained stable in the five years before and after the moment people with SUD entered into treatment for SUD. The higher use of primary health care services by people with SUD might indicate that they have higher health care needs than comparators.

The Influence of Opioid Use Disorder on Open Reduction and Internal Fixation Following Ankle Fracture

BACKGROUND

Ankle fractures are common and may require open reduction and internal fixation (ORIF). Literature is scarce evaluating the associations of opioid use disorder (OUD) with ORIF postoperative outcomes. This study investigates whether OUD patients have increased (1) costs of care, (2) emergency room visits, and (3) readmission rates.

METHODS

ORIF patients with a 90-day history of OUD were identified using an administrative claims database. OUD patients were matched (1:4) to controls by age, sex, and medical comorbidities. The Welch t-test determined the significance of cost of care. Logistic regression yielded odds ratios (ORs) for emergency room visits and 90-day readmission rates.

RESULTS

A total of 2183 patients underwent ORIF (n = 485 with OUD vs n = 1698 without OUD). OUD patients incurred significantly higher costs of care compared with controls ($5921.59 vs $5128.22, P < .0001). OUD patients had a higher incidence and odds of emergency room visits compared with controls (3.50% vs 0.64%; OR = 5.57, 95% CI = 2.59-11.97, P < .0001). The 90-day readmission rates were not significantly different between patients with and without OUD (8.65% vs 7.30%; OR = 1.20, 95% CI = 0.83-1.73, P = .320).

CONCLUSION

OUD patients have greater costs of care and odds of emergency room visits within 90 days following ORIF.Levels of Evidence: Level III: Retrospective cohort study.

Cannabis use, other drug use, and risk of subsequent acute care in primary care patients

BACKGROUND

Cannabis and other drug use is associated with adverse health events, but little is known about the association of routine clinical screening for cannabis or other drug use and acute care utilization. This study evaluated whether self-reported frequency of cannabis or other drug use was associated with subsequent acute care.

METHOD

This retrospective cohort study used EHR and claims data from 8 sites in Washington State that implemented annual substance use screening. Eligible adult primary care patients (N = 47,447) completed screens for cannabis (N = 45,647) and/or other drug use, including illegal drug use and prescription medication misuse, (N = 45,255) from 3/3/15-10/1/2016. Separate single-item screens assessed frequency of past-year cannabis and other drug use: never, less than monthly, monthly, weekly, daily/almost daily. An indicator of acute care utilization measured any urgent care, emergency department visits, or hospitalizations ≤19 months after screening. Adjusted Cox proportional hazards models estimated risk of acute care.

RESULTS

Patients were predominantly non-Hispanic White. Those reporting cannabis use less than monthly (Hazard Ratio [HR] = 1.12, 95 % CI = 1.03-1.21) or daily (HR = 1.24; 1.10-1.39) had greater risk of acute care during follow-up than those reporting no use. Patients reporting other drug use less than monthly (HR = 1.34; 1.13-1.59), weekly (HR = 2.21; 1.46-3.35), or daily (HR = 2.53; 1.86-3.45) had greater risk of acute care than those reporting no other drug use.

CONCLUSION

Population-based screening for cannabis and other drug use in primary care may have utility for understanding risk of subsequent acute care. It is unclear whether findings will generalize to U.S. states with broader racial/ethnic diversity.

Frequency of health-care utilization by adults who use illicit drugs: a systematic review and meta-analysis

AIMS

To summarize evidence on the frequency and predictors of health-care utilization among people who use illicit drugs.

DESIGN

Systematic search of MEDLINE, EMBASE and PsychINFO for observational studies reporting health-care utilization published between 1 January 2000 and 3 December 2018. We conducted narrative synthesis and meta-analysis following a registered protocol (identifier: CRD42017076525).

SETTING AND PARTICIPANTS

People who use heroin, powder cocaine, crack cocaine, methamphetamine, amphetamine, ecstasy/3,4-methyl​enedioxy​methamphetamine (MDMA), cannabis, hallucinogens or novel psychoactive substances; have a diagnosis of 'substance use disorder'; or use drug treatment services.

MEASUREMENTS

Primary outcomes were the cumulative incidence (risk) and rate of care episodes in three settings: primary care, hospital admissions (in-patient) and emergency department (ED).

FINDINGS

Ninety-two studies were included, 84% from North America and Australia. Most studies focused on people using heroin, methamphetamine or crack cocaine, or who had a diagnosis of drug dependence. We were able to conduct a meta-analysis of rates across 25 studies reporting ED episodes and 25 reporting hospital admissions, finding pooled rates of 151 [95% confidence interval (CI) = 114-201] and 41 (95% CI = 30-57) per 100 person-years, respectively; on average 4.8 and 7.1 times more often than the general population. Heterogeneity was very high and was not explained by drugs used, country of study, recruitment setting or demographic characteristics. Predictors of health-care utilization were consistent across studies and included unstable housing, drug injection and mental health problems. Opioid substitution therapy was consistently associated with reduced ED presentation and hospital admission. There was minimal research on health-care utilization by people using ecstasy/MDMA, powder cocaine, hallucinogens or novel psychoactive substances.

CONCLUSIONS

People who use illicit drugs are admitted to emergency department or hospital several times more often than the general population.

Further Utilization of Emergency Department and Inpatient Psychiatric Services Among Young Adults Admitted at the Emergency Department With Clinical Alcohol Intoxication

OBJECTIVES

To assess in a cohort of young adults admitted with alcohol intoxication (AI) to the Emergency Department (ED): how many patients are readmitted to the ED or to a Psychiatric Department (PD) inpatient unit; and which characteristics are associated with further ED and PD inpatient admissions.

METHODS

In 630 patients aged 18 to 30 years admitted for AI in 2006 to 2007 to the ED of a Swiss tertiary hospital, further ED and PD inpatient admissions through 2013 were assessed. Patient characteristics at the index (initial) ED visit were assessed using administrative and medical records.

MEASUREMENTS

Proportion of subjects with at least 1 further ED admission, 1 further ED admission with AI, and any PD admission over the study period.Associations between patients' characteristics at index visit and readmissions were assessed using backward selection multivariate regression analyses.

RESULTS

Mean age was 24, 66% were male, 60% had any ED/PD admissions during the study period, 17.9% a PD admission, and 13.8% were re-admitted to ED with AI. Disruptive behavior at the index visit was associated with further ED (odds ratio [OR] 1.69 [1.13; 2.54]) and PD admissions (OR 2.41 [1.44; 4.05]). Psychiatric diagnosis was associated with any further ED admission (OR 2.07 [1.41; 3.05]), with further ED admission with AI (OR 4.56 [2.36; 8.81]) and with PD admission (OR 3.92 [2.40; 6.41]). Female sex predicted any further ED admission (OR 1.65 [1.14; 2.39]).

CONCLUSIONS

Young adults presenting with alcohol intoxication have high rates of subsequent inpatient emergency and psychiatric admissions. Being female, presenting with disruptive behavior, and having a psychiatric diagnosis at the ED visit were predictors of further admissions.

Variables associated with low, moderate and high emergency department use among patients with substance-related disorders

AIMS

This study identified factors associated with frequency of emergency department (ED) use for medical reasons among patients with substance-related disorders (SRD) in Quebec (Canada) for 2014-15.

METHODS

Participants (n = 4731) were categorized as: 1) low (1 visit/year), 2) moderate (2 visits/year), and 3) high (3+ visits/year) ED users. Independent variables included predisposing, enabling and needs factors based on the Andersen Behavioral Model. Multinomial logistic regression identified associated variables.

RESULTS

Factors positively associated with moderate and high ED use included adjustment disorders, suicidal behavior, alcohol-induced disorders, less urgent to non-urgent illness acuity, referral to local health community services centers (LHCSC) at discharge, and living in a materially deprived area. Factors positively associated with high ED use only included anxiety disorders, alcohol use disorders, drug use disorders, chronic physical illness, subacute problems, prior ED use for MD and/or SRD, prior LHCSC medical interventions, physician consultation within one month after discharge, living in very deprived or middle-class areas, and, negatively, being hospitalized for medical reasons in second ED visit. Moderate ED use only was negatively associated with alcohol intoxication and being referred to a GP at ED discharge.

CONCLUSIONS

Compared to low ED users, most high users with SRD were men presenting more complex and severe conditions. They visited ED mainly for subacute or non-urgent problems. Compared to low ED users, most moderate users had alcohol-induced disorders, less alcohol intoxication, and acute common MD. They visited ED mainly for non-urgent care. Diverse strategies should be implemented to reduce ED visits, targeting each group.

Take -home naloxone rescue kits following heroin overdose in the emergency department to prevent opioid overdose related repeat emergency department visits, hospitalization and death- a pilot study

Background

Opioid overdoses are at an epidemic in the United States causing the deaths of thousands each year. Project DAWN (Deaths Avoided with Naloxone) is an opioid overdose education and naloxone distribution program in Ohio that distributes naloxone rescue kits at clinics and in the emergency departments of a single hospital system.

Methods

We performed a retrospective analytic cohort study comparing heroin overdose survivors who presented to the emergency department and were subsequently discharged. We compared those who received a naloxone rescue kit at discharge with those who did not. Our composite outcome was repeat opioid overdose related emergency department visit(s), hospitalization and death at 0–3 months and at 3–6 months following emergency department overdose. Heroin overdose encounters were identified by ICD- 9 or 10 codes and data was abstracted from the electronic medical record for emergency department patients who presented for heroin overdose and were discharged over a 31- month period between 2013 and 2016. Patients were excluded for previous naloxone access, incarceration, suicidal ideation, admission to the hospital or death from acute overdose on initial emergency department presentation. Data was analyzed with the Chi- square statistical test.

Results

We identified 291emergency department heroin overdose encounters by ICD-9 or 10 codes and were analyzed. A total of 71% of heroin overdose survivors received a naloxone rescue kit at emergency department discharge. Between the patients who did not receive a naloxone rescue kit at discharge, no overdose deaths occurred and 10.8% reached the composite outcome. Of the patients who received a naloxone rescue kit, 14.4% reached the composite endpoint and 7 opioid overdose deaths occurred in this cohort. No difference in mortality at 3 or 6 months was detected, p = 0.15 and 0.36 respectively. No difference in the composite outcome was detected at 3 or 6 months either, p = 0.9 and 0.99 respectively.

Conclusions

Of our emergency department patients receiving a naloxone rescue kit we did not find a benefit in the reduction of repeat emergency department visits hospitalizations, or deaths following a non-fatal heroin overdose.

Association of Prevalent Stroke with Hospitalization for Seizure: Patterns and Prognoses

INTRODUCTION

Despite the close relationship between stroke and seizures, little is known about stroke trends and inpatient mortality among patients with seizures.

MATERIALS AND METHODS

The National Inpatient Sample was used to analyze the prevalence and trends of stroke among patients discharged with a primary diagnosis of seizures between 2006 and 2014. International Classification of Diseases, Ninth Revision, Clinical Modification was used to identify patients discharged with a primary diagnosis of seizures and those with a secondary diagnosis of stroke. Multivariable logistic regression was used to examine the association between inpatient hospital mortality and stroke. Adjusted prediction of mortality post estimates of logistic regression was used to analyze mortality by stroke status overtime.

FINDINGS

A total of 400,391 (weighted 1,980,707) patients with seizures were identified between 2006 and 2014, including 61,039 weighted (3%) with a secondary diagnosis of stroke patients. Among patients with a primary diagnosis of seizures, having a secondary diagnosis of stroke doubled the odds of in-hospital death (odds ratio = 2.02; 95% confidence interval: 1.74-2.34; P < .001). Overall, between 2006 and 2014, the prevalence of stroke among patients discharged with a primary diagnosis of seizures remained stable at 3% amid fluctuations across years. Among patients with a primary discharge diagnosis of seizures who had stroke, in-hospital mortality increased from 2.3% in 2006 to 3.6% in 2014 but decreased from .8% in 2006 to .7% in 2014 in those without stroke.

CONCLUSIONS

Stroke is prevalent and is associated with increased mortality among patients who are discharged with a primary diagnosis of seizure, with a stable prevalence but suggested increased mortality across time.

Patterns of health care utilization among people who overdosed from illegal drugs: a descriptive analysis using the BC Provincial Overdose Cohort

INTRODUCTION

British Columbia (BC) declared a public health emergency in April 2016 in response to a rapid rise in overdose deaths. Further understanding of health care utilization is needed to inform prevention strategies for individuals who overdose from illegal drugs.

METHODS

The Provincial Overdose Cohort includes linked administrative data on health care utilization by individuals who experienced an illegal drug overdose event in BC between 1 January 2015 and 30 November 2016. Overdose cases were identified using data from ambulance services, coroners' investigations, poison control centre calls and hospital, emergency department and physician administrative records. In total, 10 455 overdose cases were identified and compared with 52 275 controls matched on age, sex and area of residence for a descriptive analysis of health care utilization.

RESULTS

Two-thirds (66%) of overdose cases were male and about half (49%) were 20-39 years old. Over half of the cases (54%) visited the emergency department and about one-quarter (26%) were admitted to hospital in the year before the overdose event, compared with 17% and 9% of controls, respectively. Nevertheless, nearly onefifth (19%) of cases were recorded leaving the emergency department without being seen or against medical advice. High proportions of both cases (75%) and controls (72%) visited community-based physicians. Substance use and mental health-related concerns were the most common diagnoses among people who went on to overdose.

CONCLUSION

People who overdosed frequently accessed the health care system in the year before the overdose event. In light of the high rates of health care use, there may be opportunities to identify at-risk individuals before they overdose and connect them with targeted programs and evidence-based interventions. Further work using the BC Provincial Overdose Cohort will focus on identifying risk factors for overdose events and death by overdose.

Development and characteristics of the Provincial Overdose Cohort in British Columbia, Canada

Introduction

British Columbia (BC), Canada declared a public health emergency in April 2016 for opioid overdose. Comprehensive data was needed to identify risk factors, inform interventions, and evaluate response actions. We describe the development of an overdose cohort, including linkage strategy, case definitions, and data governance model, and present the resulting characteristics, including data linkage yields and case overlap among data sources.

Methods

Overdose events from hospital admissions, physician visits, poison centre and ambulance calls, emergency department visits, and coroner’s data were grouped into episodes if records were present in multiple sources. A minimum of five years of universal health care records (all prescription dispensations, fee-for-service physician billings, emergency department visits and hospitalizations) were appended for each individual. A 20% random sample of BC residents and a 1:5 matched case-control set were generated. Consultation and prioritization ensured analysts worked to address questions to directly inform public health actions.

Results

10,456 individuals suffered 14,292 overdoses from January 1, 2015 to Nov 30, 2016. Only 28% of overdose events were found in more than one dataset with the unique contribution of cases highest from ambulance records (32%). Compared with fatal overdoses, non-fatal events more often involved females, younger individuals (20 to 29 years) and those 60 or older. In 78% of illegal drug deaths, there was no associated ambulance response. In the year prior to first recorded overdose, 60% of individuals had at least one ED visit, 31% at least one hospital admission, 80% at least one physician visit, and 87% had filled at least one prescription in a community pharmacy.

Conclusion

While resource-intensive to establish, a linked cohort is useful for characterizing the full extent of the epidemic, defining sub-populations at risk, and patterns of contact with the health system. Overdose studies in other jurisdictions should consider the inclusion of multiple data sources.