The relationship between outpatient service use and emergency department visits among people treated for mental and substance use disorders: analysis of population-based administrative data in British Columbia, Canada

Profiles of Emergency Department Users with Psychiatric Disorders Related to Barriers to Outpatient Care

Emergency department (ED) overcrowding is a growing problem worldwide. High ED users have been historically targeted to reduce ED overcrowding and associated high costs. Patients with psychiatric disorders, including substance-related disorders (SRDs), are among the largest contributors to high ED use. Since EDs are meant for urgent cases, they are not an appropriate setting for treating recurrent patients or replacing outpatient care. Identifying ED user profiles in terms of perceived barriers to care, service use, and sociodemographic and clinical characteristics is crucial to reduce ED use and unmet needs. Data were extracted from medical records and a survey was conducted among 299 ED patients from 2021 to 2022 in large Quebec networks. Cluster algorithms and comparison tests identified three profiles. Profile 1 had the most patients without barriers to care, with case managers, and received the best primary care. Profile 2 reported moderate barriers to care and low primary care use, best quality of life, and more serious psychiatric disorders. Profile 3 had the most barriers to care, high ED users, and lower service satisfaction and perceived mental/health conditions. Our findings and recommendations inform decision-makers on evidence-based strategies to address the unmet needs of these vulnerable populations.

Association of opioid or other substance use disorders with health care use among patients with suicidal symptoms

INTRODUCTION

Prior literature establishes noteworthy relationships between suicidal symptoms and substance use disorders (SUDs), particularly opioid use disorder (OUD). However, engagement with health care services among this vulnerable population remains underinvestigated. This study sought to examine patterns of health care use, identify risk factors in seeking treatment, and assess associations between outpatient service use and emergency department (ED) visits.

METHODS

Using electronic health records (EHRs) derived from five health systems across New York City, the study selected 7881 adults with suicidal symptoms (including suicidal ideation, suicide attempt, or self-harm) and SUDs between 2010 and 2019. To examine the association between SUDs (including OUD) and all-cause service use (outpatient, inpatient, and ED), we performed quasi-Poisson regressions adjusted for age, gender, and chronic disease burden, and we estimated the relative risks (RR) of associated factors. Next, the study evaluated cause-specific utilization within each resource category (SUD-related, suicide-related, and other-psychiatric) and compared them using Mann-Whitney U tests. Finally, we used adjusted quasi-Poisson regression models to analyze the association between outpatient and ED utilization among different risk groups.

RESULTS

Among patients with suicidal symptoms and SUD diagnoses, relative to other SUDs, a diagnosis of OUD was associated with higher all-cause outpatient visits (RR: 1.22), ED visits (RR: 1.54), and inpatient hospitalizations (RR: 1.67) (ps < 0.001). Men had a lower risk of having outpatient visits (RR: 0.80) and inpatient hospitalizations (RR: 0.90), and older age protected against ED visits (RR range: 0.59-0.69) (ps < 0.001). OUD was associated with increased SUD-related encounters across all settings, and increased suicide-related ED visits and inpatient hospitalizations (p < 0.001). Individuals with more mental health outpatient visits were less likely to have suicide-related ED visits (RR: 0.86, p < 0.01), however this association was not found among younger and male patients with OUD. Although few OUD patients received medications for OUD (MOUD) treatment (9.9 %), methadone composed the majority of MOUD prescriptions (77.7 %), of which over 70 % were prescribed during an ED encounter.

CONCLUSIONS

This study reinforces the importance of tailoring SUD and suicide risk interventions to different age groups and types of SUDs, and highlights missed opportunities for deploying screening and prevention resources among the male and OUD populations. Redressing underutilization of MOUD remains a priority to reduce acute health outcomes among younger patients with OUD.

Racial disparities in emergency department utilization among patients with newly diagnosed depression

OBJECTIVE

To test the hypothesis that racial and ethnic minorities have increased emergency department visit rates, despite being established with a primary care provider.

METHODS

In this retrospective cohort study, ED visits without hospital admission in a 12-month period among patients with a new primary care provider-issued diagnosis of depression were assessed. Electronic medical record (EMR) data was obtained from 47 family medicine clinics in a large Michigan-based healthcare system. General linear regression models with Poisson distribution were used to predict frequency of ED visits.

RESULTS

A total of 4159 patients were included in the analyses. In multivariable analyses, Black / African American race was associated with an additional 0.90 (95% CI 0.64, 1.16) ED visits and American Indian or Alaska Native race was associated with an additional 1.39 (95% CI 0.92, 1.87) ED visits compared to White or Caucasians (null value 0). These risks were only exceeded by patients who received a prescription for a typical antipsychotic drug agent.

CONCLUSION

Despite being established patients at primary care providers and having follow-up encounters, Black / African American and American Indian or Alaska Native patients with depression were considerably more likely to seek ED treatment compared to White/Caucasian patients with depression.

The Health and Psychosocial Profiles of Adults Who Sought Mental Health and Addiction Specialty Services Through a Centralized Intake Process in Nova Scotia in 2020 and 2021

OBJECTIVES

(1) To calculate the proportions of people who sought mental health and addiction (MHA) specialty services in Nova Scotia, overall and by sex and age. (2) To describe the health and psychosocial profiles of the MHA Intake clients. (3) To identify factors associated with acceptance for MHA services.

METHODS

The data of the Nova Scotia MHA Intake clients aged 19 to 64 years old in 2020 (N = 10,178) and in 2021 (N = 12,322) were used. The proportions of unique clients in the general population were calculated based on 2021 census data. The percentages of primary presenting concerns, the presence and frequency of psychiatric symptoms in the past month, suicide risk levels, current or past provisional psychiatric diagnosis, medical problems, and psychosocial stressors were calculated. Logistic regression was conducted to identify factors associated with the acceptance of MHA services after the assessment.

RESULTS

It was found that 1.48% and 2.33% of Nova Scotians aged 19 to 64 contacted the MHA Intake in 2020 and 2021. Over 66% were self-referrals, followed by physician referrals (28.34%). Mood (28.3%), anxiety (25.17%), and substance use (19.81%) were the top three presenting concerns for the contact. Many clients had a current or past provisional psychiatric diagnosis (58.7% in 2020, 61.8% in 2021). Among the clients, 74.67% and 68.29% reported at least 1 psychosocial stressor in 2020 and 2021, respectively. The clients with a current or past psychiatric diagnosis, suicide risk, and 2 or more psychosocial stressors, those who lived outside of Central Zone, and who had employee assistance program benefits/private insurance, were more likely to be qualified and accepted for MHA services than others.

CONCLUSIONS

The Intake clients have complex health and psychosocial profiles. Future studies are needed to monitor the trajectories of the clients to reduce inequities in receiving MHA services and improve client outcomes.

Pan-Canadian study of psychiatric care (PCPC): protocol for a mixed-methods study

INTRODUCTION

The Canadian population has poor and inequitable access to psychiatric care despite a steady per-capita supply of psychiatrists in most provinces. There is some quantitative evidence that practice style and characteristics vary substantially among psychiatrists. However, how this compares across jurisdictions and implications for workforce planning require further study. A qualitative exploration of psychiatrists' preferences for practice style and the practice choices that result is also lacking. The goal of this study is to inform psychiatrist workforce planning to improve access to psychiatric care by: (1) developing and evaluating comparable indicators of supply of psychiatric care across provinces, (2) analysing variations and changes in the characteristics of the psychiatrist workforce, including demographics and practice style and (3) studying psychiatrist practice choices and intentions, and the factors that lead to these choices.

METHODS AND ANALYSIS

A cross-provincial mixed-methods study will be conducted in the Canadian provinces of British Columbia, Manitoba, Ontario and Nova Scotia. We will analyse linked-health administrative data within three of the four provinces to develop comparable indicators of supply and characterise psychiatric services at the regional level within provinces. We will use latent profile analysis to estimate the probability that a psychiatrist is in a particular practice style and map the geographical distribution of psychiatrist practices overlayed with measures of need for psychiatric care. We will also conduct in-depth, semistructured qualitative interviews with psychiatrists in each province to explore their preferences and practice choices and to inform workforce planning.

ETHICS AND DISSEMINATION

This study was approved by Ontario Tech University Research Ethics Board (16637 and 16795) and institutions affiliated with the study team. We built a team comprising experienced researchers, psychiatrists, medical educators and policymakers in mental health services and workforce planning to disseminate knowledge that will support effective human resource policies to improve access to psychiatric care in Canada.

Trends in Involuntary Psychiatric Hospitalization in British Columbia: Descriptive Analysis of Population-Based Linked Administrative Data from 2008 to 2018

INTRODUCTION

Involuntary psychiatric hospitalization occurs when someone with a serious mental disorder requires treatment without their consent. Trends vary globally, and currently, there is limited data on involuntary hospitalization in Canada. We examine involuntary hospitalization trends in British Columbia, Canada, and describe the social and clinical characteristics of people ages 15 and older who were involuntarily hospitalized between 2008/2009 and 2017/2018.

METHOD

We used population-based linked administrative data to examine and compare trends in involuntary and voluntary hospitalizations for mental and substance use disorders. We described patient characteristics (sex/gender, age, health authority, income, urbanity/rurality, and primary diagnosis) and tracked the count of involuntarily hospitalized people over time by diagnosis. Finally, we examined population-based prevalence over time by age and sex/gender.

RESULTS

Involuntary hospitalizations among British Columbians ages 15 and older rose from 14,195 to 23,531 (65.7%) between 2008/2009 and 2017/2018. Apprehensions involving police increased from 3,502 to 8,009 (128.7%). Meanwhile, voluntary admissions remained relatively stable, with a minimal increase from 17,651 in 2008/2009 to 17,751 in 2017/2018 (0.5%). The most common diagnosis for involuntary patients in 2017/2018 was mood disorders (25.1%), followed by schizophrenia (22.3%), and substance use disorders (18.8%). From 2008/2009 to 2017/2018, the greatest increase was observed for substance use disorders (139%). Over time, population-based prevalence increased most rapidly among women ages 15-24 (162%) and men ages 15-34 (81%) and 85 and older (106%).

CONCLUSION

Findings highlight the need to strengthen the voluntary care system for mental health and substance use, especially for younger adults, and people who use substances. They also signal a need for closer examination of the use of involuntary treatment for substance use disorders, as well as further research exploring forces driving police involvement and its implications.