The Association Between Prior Mental Health Service Utilization and Risk of Recidivism among Incarcerated Ontario Residents.

BACKGROUND: There is mixed evidence on the link between mental health and addiction (MHA) history and recidivism. Few studies have examined post-release MHA care. Our objective was to examine the association between prior (pre-incarceration) MHA service use and post-release recidivism and service use. METHODS: We conducted a population-based cohort study linking individuals held in provincial correctional institutions in 2010 to health administrative databases. Prior MHA service use was assigned hierarchically in order of hospitalization, emergency department visit and outpatient visit. We followed up individuals post-release for up to 5 years for the first occurrence of recidivism and MHA hospitalization, emergency department visit and outpatient visit. We use Cox-proportional hazards models to examine the association between prior MHA service use and each outcome adjusting for prior correctional involvement and demographic characteristics. RESULTS: Among a sample consisting of 45,890 individuals, we found that prior MHA service use was moderately associated with recidivism (hazard ratio (HR): 1.20-1.50, all P < 0.001), with secondary analyses finding larger associations for addiction service use (HR range: 1.34-1.54, all P < 0.001) than for mental health service use (HR range: 1.09-1.18, all P < 0.001). We found high levels of post-release MHA hospitalization and low levels of outpatient MHA care relative to need even among individuals with prior MHA hospitalization. DISCUSSION: Despite a high risk of recidivism and acute MHA utilization post-release, we found low access to MHA outpatient care, highlighting the necessity for greater efforts to facilitate access to care and care integration for individuals with mental health needs in correctional facilities.

Chronic Psychotic Disorders and Correctional Involvement: A Population-Based Matched Case-Control Study in Ontario, Canada.

OBJECTIVE: Individuals with chronic psychotic disorders are overrepresented in correctional facilities, but little is known about factors that increase the risk of correctional involvement. The objective of this study was to compare individuals with chronic psychotic disorders who were released from correctional facilities in Ontario to individuals with chronic psychotic disorders but no correctional involvement on sociodemographic, clinical, and prior mental health-related health service utilization characteristics. METHOD: All individuals with chronic psychotic disorders who were released from a provincial correctional facility in Ontario in 2010 were matched (1:2) by age and sex to Ontario residents with chronic psychotic disorders and no correctional involvement. Covariates included sociodemographic (rural residence, marginalization such as residential instability quintile, material deprivation quintile, dependency quintile, and ethnic concentration quintile) and clinical (duration of chronic psychotic disorder and comorbidities) characteristics, and mental health-related health service utilization characteristics (primary care physician, psychiatrist and emergency department visits, and hospitalizations) 1 and 3 years prior to correctional involvement. The association between correctional involvement and prior health service utilization was measured by estimating incidence rate ratios using Poisson and negative-binomial regressions. RESULTS: Individuals with correctional involvement (N = 3,197) lived in neighbourhoods with higher material deprivation and residential instability, and had a shorter duration of illness, and more psychosocial comorbidities (e.g., behavioural issues and depression) than individuals without correctional involvement (N = 6,393). Adjusting for sociodemographic and clinical variables, individuals with correctional involvement had a higher rate of mental health-related primary care physician visits, emergency department visits, and hospitalizations but a lower rate of psychiatrist visits prior to correctional involvement, compared to individuals without correctional involvement. CONCLUSIONS: Despite higher mental health-related comorbidities and higher rates of accessing acute mental health services among individuals with chronic psychotic disorders and correctional involvement, visits to psychiatrists prior to involvement were low.

Intellectual and developmental disabilities in Ontario's criminal justice and forensic mental health systems: Using data to tell the story.

BACKGROUND: International studies show that adults with intellectual and developmental disabilities (IDD) are disproportionately represented in the criminal justice and forensic mental health systems; however, it is difficult to capture their involvement across systems in any one jurisdiction. AIMS: The current study aimed to estimate the prevalence of IDD across different parts of the criminal justice and forensic mental health systems in Ontario and to describe the demographic and clinical profiles of these individuals relative to their counterparts without IDD. METHODS: This project utilised administrative data to identify and describe the demographic and clinical characteristics of adults with IDD and criminal justice or forensic involvement across four sectors: federal correctional facilities, provincial correctional facilities, forensic inpatient mental health care and community mental health programmes. Questions were driven by and results were contextualised by a project advisory group and people with lived experience from the different sectors studied, resulting in a series of recommendations. RESULTS: Adults with IDD were over-represented in each of the four settings, ranging from 2.1% in federal corrections to 16.7% in forensic inpatient care. Between 20% (forensic inpatient) and 38.4% (provincial corrections) were under the age of 25 and between 34.5% (forensic inpatient) and 41.8% (provincial corrections) resided in the lowest income neighbourhoods. Medical complexity and rates of co-occurring mental health conditions were higher for people with IDD than those without IDD in federal and provincial corrections. CONCLUSIONS: Establishing a population-based understanding of people with IDD within these sectors is an essential first step towards understanding and addressing service and care needs. Building on the perspectives of people who work in and use these systems, this paper concludes with intervention recommendations before, during and after justice involvement.

Opioid toxicity deaths in Black persons who experienced provincial incarceration in Ontario, Canada 2015-2020: A population-based study.

OBJECTIVE: In the context of mass incarceration and the opioid toxicity crisis in North America, there is a lack of data on the burden of opioid toxicity deaths in Black persons who experience incarceration. We aimed to describe absolute and relative opioid toxicity mortality for Black persons who experienced incarceration in Ontario, Canada between 2015 and 2020. METHODS: We linked data for all persons incarcerated in provincial correctional facilities and all persons who died from opioid toxicity in Ontario between 2015 and 2020, and accessed public data on population sizes. We described the characteristics of Black persons who were incarcerated and died from opioid toxicity, and calculated absolute mortality rates, as well as age-standardized mortality rates compared with all persons in Ontario not incarcerated during this period. RESULTS: Between 2015 and 2020, 0.9% (n = 137) of 16,177 Black persons who experienced incarceration died from opioid toxicity in custody or post-release, for an opioid toxicity death rate of 0.207 per 100 person years. In the two weeks post-release, the opioid toxicity death rate was 1.34 per 100 person years. Standardized for age and compared with persons not incarcerated, the mortality ratio (SMR) was 17.8 (95%CI 16.4-23.1) for Black persons who experienced incarceration. CONCLUSIONS: We identified a large, inequitable burden of opioid toxicity death for Black persons who experience incarceration in Ontario, Canada. Work is needed to support access to culturally appropriate prevention and treatment in custody and post-release for persons who are Black, and to prevent incarceration and improve determinants of health.

Prevalence of Mental Health and Addiction Service use Prior to and During Incarceration in Provincial Jails in Ontario, Canada: A Retrospective Cohort Study.

OBJECTIVE: Individuals with mental illness and addiction are overrepresented in prisons. Few studies have assessed mental health and addiction (MHA)-related service use among individuals experiencing incarceration using health administrative data and most focus on service use after prison release. The objective of this study was to determine the prevalence of MHA-related service use in the 5 years prior to and during incarceration. METHODS: We used linked correctional and administrative health data for people released from Ontario provincial jails in 2010. MHA-related service use in the 5 years prior to the index incarceration was categorized hierarchically into four mutually exclusive categories based on the type of service use: psychiatric hospitalization, MHA-related emergency department (ED) visit, MHA-related outpatient visit (from psychiatrist or primary care physician), and no MHA-related service use. Demographic, diagnostic, and incarceration characteristics were compared across the four service use categories. MHA-related service use during the index incarceration was assessed by category and length of incarceration. RESULTS: A total of 48,917 individuals were included. Prior to incarceration, 6,116 (12.5%) had a psychiatric hospitalization, 8,837 (18.1%) had an MHA-related ED visit, and 15,866 (32.4%) had an MHA-related outpatient visit. Of the individuals with any MHA-related service prior to incarceration, 60.4% did not receive outpatient care from a psychiatrist prior to incarceration and 65.6% did not receive MHA-related care during incarceration. CONCLUSION: Despite a high prevalence of mental illness and addiction among people experiencing incarceration, access to and use of MHA-related care prior to and during incarceration is poor. Increasing the accessibility and use of MHA-related services throughout the criminal justice pathway is warranted.

Opioid agonist treatment take-home doses ('carries'): Are current guidelines resulting in low treatment coverage among high-risk populations in Canada and the USA?

Opioid agonist treatment (OAT) is the primary intervention for opioid use disorder (OUD) in Canada and the USA. Yet, a number of barriers contribute to sub-optimal treatment uptake and retention, including daily-supervised medication administration. Thus, clients are eventually granted access to take-home OAT doses (i.e., 'carries') to reduce this burden. However, this decision is based on physician discretion and whether patients can demonstrate stability in various life domains, many of which are inextricably linked to the social determinants of health (SDOH). Current Canadian and USA OAT carry guidance documents are not standardized and do not take the SDOH into consideration, resulting in the potential for inequitable access to OAT carries, which may be the case particularly among marginalized populations such as individuals with OUD who have been released from custody. This perspective article posits that current OAT guidelines contribute to inequities in access to OAT carries, and that these inequities likely result in disproportionately low coverage for OUD treatment among some high-risk groups, including individuals on release from incarceration in particular. Relevant impacts of COVID-19 and related policy changes are considered, and suggestions and recommendations to amend current OAT guidance documents are provided.

Intellectual/developmental disabilities among people incarcerated in federal correctional facilities in Ontario, Canada: Examining prevalence, health and correctional characteristics.

BACKGROUND: There is little research with people who experience intellectual/developmental disabilities and imprisonment. METHODS: The study linked health and correctional data to examine prevalence of intellectual/developmental disabilities and health and correctional characteristics among adults experiencing their first federal incarceration between 1 January 2002 and 31 December 2011 (n = 9278) and two non-incarcerated groups (n = 10,086,802). RESULTS: The prevalence of intellectual/developmental disabilities was 2.1% in the incarcerated group and 0.9% in the non-incarcerated group. Before incarceration, those with, versus without, intellectual/developmental disabilities were at greater risk of traumatic brain injury, mental illness, and substance use disorders. While incarcerated, those with intellectual/developmental disabilities were more likely to incur serious institutional disciplinary charges. Post-incarceration, persons with intellectual/developmental disabilities were at greater risk of emergency department visits, and psychiatric and acute hospitalizations, than the non-incarcerated groups. CONCLUSIONS: People with intellectual/developmental disabilities are overrepresented in Canadian federal correctional institutions. The authors offer strategies to support people prior to, during, and post-incarceration.

Prevalence and Predictors of Reincarceration after Correctional Center Release: A Population-based Comparison of Individuals with and without Schizophrenia in Ontario, Canada: Prévalence et prédicteurs de la réincarcération après la libération d'un centre correctionnel : une comparaison dans la population-de personnes souffrant ou non de schizophrénie en Ontario, Canada.

OBJECTIVES: Individuals with schizophrenia are overrepresented in correctional facilities relative to their population-based prevalence. The purpose of this study was to determine the rate and predictors of reincarceration of individuals with schizophrenia after release from correctional facilities. METHODS: This was a retrospective cohort study that included all people released from Ontario's provincial correctional facilities from January 1 to December 31, 2010. Individuals with schizophrenia were identified using a population-based algorithm. The primary outcome was time to reincarceration. Covariates included sociodemographic characteristics (age, sex, neighborhood income quintile, urban/rural residence), health service utilization (primary care physician visits, psychiatrist visits, psychiatric and nonpsychiatric hospitalizations, emergency department visits), and other clinical comorbidity. Survival analysis was used to examine the association between schizophrenia and reincarceration. RESULTS: Among 46,928 individuals, N = 3,237 (7%) had a diagnosis of schizophrenia. Approximately 67.5% of these individuals were reincarcerated within 5 years following their first release in 2010, compared to 58.8% of individuals without schizophrenia. Individuals with schizophrenia were 40% (HR = 1.39, 95% CI, 1.33 to 1.45) more likely to be reincarcerated following release than the control group after adjusting for demographic characteristics. This association reduced to 8% (HR = 1.08, 95% CI,1.03 to 1.14) after adjusting for prior health service utilization, prior correctional involvement, and comorbidities. CONCLUSION: Individuals with schizophrenia were more likely to experience reincarceration after release from correctional facilities. This risk is partly explained by prior correctional involvement, health service utilization, and comorbidities. Future research should focus on risk factors predicting the higher reincarceration rate and interventions to reduce correctional involvement.

90-90-90 for everyone?: Access to HIV care and treatment for people with HIV who experience imprisonment in Ontario, Canada.

We examined HIV care and treatment in prison and after release for people with HIV in Ontario, Canada, and compared HIV care and treatment with the general population. We used administrative data to identify people with HIV released from provincial prison in 2010 and in the general population. We calculated the proportion of people with HIV who accessed HIV care in prison. We compared HIV care use between people with HIV on prison release and in the general population. We estimated the proportion of people with HIV on antiretroviral therapy in prison as the ratio of the average numbers of people prescribed antiretroviral therapy in prison in 2009/2010 and people with HIV in prison in January 2010. We compared the proportion of people with HIV on public drug benefits that filled an antiretroviral therapy prescription within 6 months for people postrelease and in the general population. Of 344 people with HIV on prison admission, 34.0% received HIV care in prison. Over 1 year, 63.6% of 330 people with HIV on prison release and 67.7% of 15,819 people with HIV in the general population accessed HIV care (p = 0.118), and 43.3% of people with HIV on prison release and 55.2% of people with HIV in the general population had 2 or more HIV care visits (p < 0.001). In prison, 52.4% of people with HIV (39.5/75.4) were on antiretroviral therapy. Of those accessing drug benefits, 60.1% of 226 people with HIV on prison release and 79.6% of 7458 people with HIV in the general population claimed an antiretroviral therapy prescription within 6 months (p < 0.001). Access to HIV care and treatment were suboptimal in prison, and sustained HIV care and treatment were worse for people post-release compared to the general population. Interventions are needed to support HIV care for this population.

Infant and Maternal Outcomes for Women Who Experience Imprisonment in Ontario, Canada: A Retrospective Cohort Study.

OBJECTIVE: To describe the population-level risk of infant and maternal outcomes for women who experience imprisonment and compare outcomes with the general population. METHODS: We conducted a retrospective cohort study. We used linked correctional and health data for women released from provincial prisons in 2010. We defined three exposure groups for Ontario singleton deliveries from 2005-2015: deliveries to women who were in prison during pregnancy but not necessarily for delivery, prison pregnancies; deliveries to women who had been in prison but not while pregnant, prison controls; and general population deliveries. We compared groups using generalized estimating equations. Primary outcomes were preterm birth, low birth weight, and small for gestational age birth weight. Secondary outcomes included NICU admission, neonatal abstinence syndrome, placental abruption, and preterm prelabour rupture of membranes. RESULTS: In prison pregnancies (n = 544) and prison controls (n = 2156), respectively, preterm birth risk was 15.5% and 12.5%, low birth weight risk was 13.0% and 11.6%, and small for gestational age birth weight risk was 18.1% and 19.2%. Adjusted for maternal age and parity and compared with general population deliveries (N = 1 284 949), odds ratios were increased for prison pregnancies and prison controls, respectively, at 2.7 (95% CI 2.2-3.4) and 2.1 (95% CI 1.9-2.4) for preterm birth, 3.1 (95% CI 2.4-3.9) and 2.7 (95% CI 2.3-3.1) for low birth weight, and 1.6 (95% CI 1.3-2.1) and 1.8 (95% CI 1.6-2.0) for small for gestational age birth weight. CONCLUSION: There is an increased risk of adverse infant outcomes in women who experience imprisonment compared with the general population, whether they are in prison during pregnancy or not.

The prevalence and health status of people with developmental disabilities in provincial prisons in Ontario, Canada: A retrospective cohort study.

BACKGROUND: Data on the prevalence of developmental disabilities in people who experience imprisonment and on their characteristics are lacking. METHODS: The present authors identified adults with developmental disabilities who were released from Ontario provincial prisons in 2010 and a general population comparator group using administrative data. The present authors examined demographic characteristics, morbidity and healthcare use. RESULTS: The prevalence of developmental disabilities was 2.2% in the prison group (N = 52,302) and 0.7% in the general population (N = 10,466,847). The prevalence of psychotic illness, substance-related disorder and self-harm was higher among people in the prison group with developmental disabilities. People with developmental disabilities were more likely to have emergency department visits and hospitalizations in prison and in the year after release. CONCLUSIONS: People with developmental disabilities are overrepresented in provincial prisons and have a high burden of disease. Strategies are indicated to prevent incarceration and to improve health.

Improving Health and Healthcare Access for People Who Experience Imprisonment in Ontario.

People who experience imprisonment have worse health status than other Ontarians - about 40% lack access to primary care in the community, and the period after release from prison is associated with high risks of adverse health outcomes. Population-based correctional and health administrative data suggest that access to quality healthcare in prison and in the community needs to improve if we are to improve population health and deliver on healthcare obligations to people experiencing imprisonment.

History of Childhood Abuse in Populations Incarcerated in Canada: A Systematic Review and Meta-Analysis.

BACKGROUND: A history of childhood abuse may affect people's health and criminal justice system involvement. Understanding the prevalence of childhood abuse among individuals in prison is important to inform effective and appropriate correctional services. OBJECTIVES: To review and summarize data on the prevalence of childhood abuse among people experiencing imprisonment in Canada. SEARCH METHODS: We searched for studies in bibliographic indexes, reference lists, and gray literature, and we consulted experts. SELECTION CRITERIA: We included studies published since 1987 that reported data on prevalence of a history of abuse before the age of 18 years among people in Canadian prisons, including any abuse, physical abuse, sexual abuse, emotional abuse, and neglect. DATA COLLECTION AND ANALYSIS: Two authors independently reviewed titles and abstracts for eligibility and reviewed full texts for eligibility. Analyses included summary estimates and meta-regression with random effects. MAIN RESULTS: The search identified 1429 records. We included 34 unique studies in our review and 29 nonoverlapping studies in our meta-analysis. The summary prevalence for any type of childhood abuse was 65.7% (95% confidence interval [CI] = 52.6, 77.7; range = 56.2% to 75.0%) among women; only one study reported the prevalence among men (35.5%). The summary prevalence of sexual abuse was 50.4% (95% CI = 33.5, 67.2; range = 9.9% to 77.3%) among women and 21.9% (95% CI = 15.7, 28.8; range = 8.3% to 55.6%) among men. The prevalence of neglect was 51.5% (95% CI = 43.1, 59.7; range = 45.5% to 65.1%) among women and 42.0% (95% CI = 12.7, 74.6; range = 6.8% to 99.0%) among men. The prevalence of physical abuse was 47.7% (95% CI = 41.3, 54.0; range = 16.3% to 83.0%), and the prevalence of emotional abuse was 51.5% (95% CI = 34.8, 67.9; range = 8.7% to 96.0%); we did not find differences according to gender. Prevalence estimates for all types of abuse showed high and unexplained variability across studies. CONCLUSIONS: Half of people in prisons in Canada experienced abuse in childhood. Public Health Implications. Prisons should incorporate trauma-informed approaches. Research is required to understand the association between a history of childhood abuse and criminal justice system involvement and to prevent childhood abuse and mitigate its adverse effects. Systematic Review Registration. PROSPERO CRD42017056192.

Health care utilization by people with HIV on release from provincial prison in Ontario, Canada in 2010: a retrospective cohort study.

Limited evidence suggests that at the time of release from prison, people with HIV face barriers to health care, which may contribute to worsening HIV clinical outcomes. We aimed to describe health care utilization for people with HIV released from provincial prison in Ontario in 2010, and to compare rates of use with prisoner and general population controls. We used Ontario's administrative health records and data from the Ontario Ministry of Community Safety and Correctional Services on all persons released from provincial prison in 2010. We matched each person with HIV released from provincial prison by age and sex with three controls in each of three groups: people with no HIV released from provincial prison, people with HIV in the general population, and people with no HIV in the general population. We compared rates of use of primary care, non-primary ambulatory care, emergency departments, and hospitalization in the year after the first release from provincial prison in 2010 and in the corresponding period for matched controls. We identified 330 persons with HIV released from provincial prison in 2010. Their median time to first HIV-ambulatory care visit after prison release was 177 days (SD 136-239). Compared to all control groups, people with HIV released from provincial prison had higher rates of primary care use, unscheduled emergency department visits and hospital admissions at 30, 90 and 365 days after release. People with HIV released from provincial prison have a long time to first contact with HIV ambulatory care, and higher rates of health care utilization across health care settings. Interventions are required to facilitate post-release linkage to care for this population.

Interactions between Police and Persons Who Experience Homelessness and Mental Illness in Toronto, Canada: Findings from a Prospective Study.

OBJECTIVE: We aimed to describe interactions between police and persons who experience homelessness and serious mental illness and explore whether housing status is associated with police interactions. METHOD: We conducted a secondary analysis of 2008 to 2013 data from the Toronto, Canada, site of the At Home/Chez Soi study. Using police administrative data, we calculated the number and types of police interactions, the proportion of charges for acts of living and administration of justice, and the proportion of occurrences due to victimization, involuntary psychiatric assessment, and suicidal behavior. Using generalized estimating equations, we estimated the odds of police interaction by housing status. RESULTS: This study included 547 adults with mental illness who were homeless at baseline. In the year prior to randomization, 55.8% of participants interacted with police, while 51.7% and 43.0% interacted with police in Study Years 1 and 2, respectively. Of 2,228 charges against participants, 12.6% were due to acts of living and 21.2% were for administration of justice. Of 518 occurrences, 41.1% were for victimization, 45.6% were for mental health assessment, and 22.2% were for suicidal behavior. The odds of any police interaction during the past 90 days was 47% higher for those who were homeless compared to those who were stably housed (95% CI 1.26 to 1.73). CONCLUSIONS: For people who experience homelessness and mental illness in Toronto, Canada, interactions with police are common. The provision of stable housing and changes in policy and practice could decrease harms and increase health benefits associated with police interactions for this population.

Using concept mapping to inform the development of a transitional reintegration intervention program for formerly incarcerated people with HIV.

BACKGROUND: Accessing HIV-related care is challenging for formerly incarcerated people with HIV. Interventions informed by the perspectives of these individuals could facilitate engagement with care and address competing priorities that may act as barriers to this process. METHODS: We used concept mapping to identify and prioritize the main obstacles to engaging with HIV-related care following prison release. In brainstorming sessions, formerly incarcerated people with HIV generated responses to a focused prompt regarding the main barriers to reengaging with care. These were consolidated in 35 statements. Next, participants sorted the consolidated list of responses into groups and rated each from lowest to highest in terms of its importance and feasibility of being addressed. We used cluster analysis to generate concept maps that were interpreted with participants. RESULTS: Overall, 39 participants participated in brainstorming sessions, among whom 18 returned for rating and sorting. Following analysis, a seven-cluster map was generated, with participants rating the 'Practical Considerations' (e.g. lack of transportation from prison) and 'Survival Needs' (e.g. securing housing and food) clusters as most important. Although ratings were generally similar between women and men, women assigned greater importance to barriers related to reconnecting with children. CONCLUSIONS: Using concept mapping, we worked with formerly incarcerated people with HIV to identify and prioritize key challenges related to accessing health and social services following prison release. Transitional intervention programs should include programs and processes that address meeting basic subsistence needs and overcoming logistical barriers related to community re-entry.

Attachment to primary care and team-based primary care: Retrospective cohort study of people who experienced imprisonment in Ontario.

OBJECTIVE: To examine attachment to primary care and team-based primary care in the community for people who experienced imprisonment in Ontario, and to compare these attachment data with data for the general population. DESIGN: Population-based retrospective cohort study. SETTING: Ontario. PARTICIPANTS: All persons released from provincial prison in Ontario to the community in 2010 who were linked with provincial health administrative data, and an age- and sex-matched general population group. MAIN OUTCOME MEASURES: Primary care attachment and team-based primary care attachment in the 2 years before admission to provincial prison (baseline) and in the 2 years after release in 2010 (follow-up) for the prison release group, and for the corresponding periods for the general population group. RESULTS: People in the prison release group (n = 48 861) were less likely to be attached to primary care compared with the age- and sex-matched general population group (n = 195 444), at 58.9% versus 84.1% at baseline (P < .001) and 63.0% versus 84.4% during follow-up (P < .001), respectively. The difference in attachment to team-based primary care was small in magnitude but statistically significant, at 14.4% versus 16.1% at baseline (P < .001) and 19.9% versus 21.6% during follow-up (P < .001), respectively. CONCLUSION: People who experience imprisonment have lower primary care attachment compared with the general population. Efforts should be made to understand barriers and to facilitate access to high-quality primary care for this population, including through initiatives to link people while in prison with primary care in the community.

Access to Primary Care for Persons Recently Released From Prison.

We aimed to determine if a history of recent imprisonment affects access to primary care. Using patient roles, we telephoned to request an initial appointment with all family physicians (n = 339) who were accepting new patients in British Columbia, Canada. We sequentially assigned patient scenarios: male or female recently released from prison; male or female control. Controls were 1.98 (95% CI, 1.59-2.46) times as likely to be offered an appointment compared with persons recently released from prison, with an absolute risk difference of 41.8% (95% CI, 31.0-52.5). Our study suggests discrimination is a barrier to primary care for people released from prison, even with universal health insurance. We need to improve access to primary care during the high-risk period following prison release.

Primary care utilization in people who experience imprisonment in Ontario, Canada: a retrospective cohort study.

BACKGROUND: Access to primary care is an important determinant of health, and data are sparse on primary care utilization for people who experience imprisonment. We aimed to describe primary care utilization for persons released from prison, and to compare utilization with the general population. METHODS: We linked correctional data for all persons released from provincial prison in Ontario, Canada in 2010 with health administrative data. We matched each person by age and sex with four general population controls. We compared primary care utilization rates using generalized estimating equations. We adjusted rate ratios for aggregated diagnosis groups, to explore this association independent of comorbidity. We examined the proportion of people using primary care using chi squared tests and time to first primary care visit post-release using the Kaplan-Meier method. RESULTS: Compared to the general population controls, the prison release group had significantly increased relative rates of primary care utilization: at 6.1 (95% CI 5.9-6.2) in prison, 3.7 (95% CI 3.6-3.8) in the week post-release and between 2.4 and 2.6 in the two years after prison release. All rate ratios remained significantly increased after adjusting for comorbidity. In the month after release, however, 66.3% of women and 75.5% of men did not access primary care. CONCLUSIONS: Primary care utilization is high in prison and post-release for people who experience imprisonment in Ontario, Canada. Increased use is only partly explained by comorbidity. The majority of people do not access primary care in the month after prison release. Future research should identify reasons for increased use and interventions to improve care access for persons who are not accessing care post-release.