Outcomes following hip fracture surgery in adults with schizophrenia in Ontario, Canada: A 10-year population-based retrospective cohort study.

OBJECTIVE: To understand immediate and long-term outcomes following hip fracture surgery in adults with schizophrenia. METHODS: Retrospective population-based cohort study leveraging health administrative databases from Ontario, Canada. Individuals aged 40-105 years with hip fracture surgery between April 1, 2009 and March 31, 2019 were included. Schizophrenia was ascertained using a validated algorithm. Outcomes were: 30-day mortality; 30-day readmission; 1-year survival; and subsequent hip fracture within 2 years. Analyses incorporated Generalized Estimating Equation models, Kaplan-Meier curves, and Fine-Gray competing risk models. RESULTS: In this cohort study of 98,126 surgically managed hip fracture patients, the median [IQR] age was 83[75-89] years, 69.2% were women, and 3700(3.8%) had schizophrenia. In Fine-Gray models, schizophrenia was associated with subsequent hip fracture (sdRH, 1.29; 95% CI, 1.09-1.53), with male patients with schizophrenia sustaining a refracture 50 days earlier. In age- and sex-adjusted GEE models, schizophrenia was associated with 30-day mortality (OR, 1.31; 95% CI, 1.12-1.54) and readmissions (OR, 1.40; 95% CI, 1.25-1.56). Kaplan-Meier survival curves suggested that patients with schizophrenia were less likely to be alive at 1-year. CONCLUSIONS: Study highlights the susceptibility of hip fracture patients with schizophrenia to worse outcomes, including refracture, with implications for understanding modifiable processes of care to optimize their recovery.

Mental Illness in the 2 Years Prior to Pregnancy in a Population With Traumatic Brain Injury: A Cross-Sectional Study: La maladie mentale dans les deux ans précédant une grossesse dans une population souffrant de lésion cérébrale traumatique : une étude transversale.

OBJECTIVE: Existing studies, in mostly male samples such as veterans and athletes, show a strong association between traumatic brain injury (TBI) and mental illness. Yet, while an understanding of mental health before pregnancy is critical for informing preconception and perinatal supports, there are no data on the prevalence of active mental illness before pregnancy in females with TBI. We examined the prevalence of active mental illness ≤2 years before pregnancy (1) in a population with TBI, and (2) in subgroups defined by sociodemographic, health, and injury-related characteristics, all compared to those without TBI. METHOD: This population-based cross-sectional study was completed in Ontario, Canada, from 2012 to 2020. Modified Poisson regression generated adjusted prevalence ratios (aPRs) of active mental illness ≤2 years before pregnancy in 15,585 females with TBI versus 846,686 without TBI. We then used latent class analysis to identify subgroups with TBI according to sociodemographic, health, and injury-related characteristics and subsequently compared them to females without TBI on their outcome prevalence. RESULTS: Females with TBI had a higher prevalence of active mental illness ≤2 years before pregnancy than those without TBI (44.1% vs. 25.9%; aPR 1.46, 95% confidence interval, 1.43 to 1.49). There were 3 TBI subgroups, with Class 1 (low-income, past assault, recent TBI described as intentional and due to being struck by/against) having the highest outcome prevalence. CONCLUSIONS: Females with TBI, and especially those with a recent intentional TBI, have a high prevalence of mental illness before pregnancy. They may benefit from mental health screening and support in the post-injury, preconception, and perinatal periods. PLAIN LANGUAGE TITLE: Mental illness in the 2 years before pregnancy in a population with traumatic brain injury. PLAIN LANGUAGE SUMMARY: Research has shown a strong association between traumatic brain injury (TBI) and mental illness. Most previous studies have been conducted in primarily male samples, like veterans and professional athletes. Understanding mental health before pregnancy is important for deciding what supports people need before and during pregnancy. However, there are no studies on the frequency of mental illness in females with TBI before a pregnancy. We examined the frequency of mental illness 2 years before pregnancy in a population with TBI, and in subgroups defined by different social, health, and injury-related characteristics, compared to those without TBI. We undertook a population-wide study of all females with and without TBI in Ontario, Canada, with a birth in 2012-2020. We used statistical models to compare these groups on the presence of mental illness in the 2 years before pregnancy, before and after accounting for social and health characteristics. We also identified subgroups with TBI according to their social (e.g., poverty), health (e.g., chronic conditions), and injury-related characteristics (e.g., cause of injury) and subsequently compared them to females without TBI on their frequency of mental illness in the 2 years before pregnancy. Forty-four percent of females with TBI had mental illness in the 2 years before pregnancy compared to 25% of those without TBI. There were 3 TBI subgroups. Females with low-income, past assault, and injuries that were described as being intentional had the highest frequency of mental illness in the 2 years before pregnancy. Females with TBI may benefit from mental health screening and support post-injury and around the time of pregnancy.

Non-fatal self-harm and suicide following postpartum psychiatric emergency department visits: A population-based retrospective cohort study.

In a population-based cohort of postpartum individuals in Ontario, Canada, this study aimed to determine the risk of non-fatal self-harm and suicide within one year of an initial postpartum psychiatric emergency department (ED) visit (2008-2020), and the key associated factors. Of 16,475 postpartum individuals with psychiatric ED visits, 714 (4.3 %) had non-fatal self-harm within one year, and 23 (0.15 %) died by suicide. Risk was substantially higher for those with self-harm at the initial presentation. Further efforts to connect individuals with postpartum psychiatric ED visits with needed inpatient care and outpatient follow-up are required to reduce non-fatal self-harm and suicide risk.

Association between dermatology follow-up and melanoma survival: A population-based cohort study.

BACKGROUND: Guidelines recommend that patients with melanoma undergo dermatologic examination at least annually. Adherence to follow-up and its impact on survival are unclear. OBJECTIVE: To determine the level of adherence to annual dermatologic follow-up in patients with primary cutaneous melanoma, identify predictors for better adherence, and evaluate whether adherence was associated with melanoma-related mortality. METHODS: Retrospective inception cohort analysis of adults with primary invasive melanoma in Ontario, Canada from 2010 to 2013 with follow-up until December 31, 2018. RESULTS: Adherence to dermatologic follow-up was variable with only 28.0% of patients seeing a dermatologist at least annually (median follow-up 5.0 years). Younger age, female sex, higher income, greater access to dermatology care, stage 2/3 melanoma, prior keratinocyte carcinoma, fewer comorbidities, and any outpatient visit in the 12 months prior to melanoma diagnosis were predictors for adherence. Greater adherence to annual dermatology visits was associated with reduced melanoma-specific mortality compared with lower levels of adherence (adjusted hazard ratio 0.64, 95% CI 0.52-0.78). LIMITATIONS: Observational study design and inability to identify skin examinations performed by non-dermatologists. CONCLUSION: Adherence to annual dermatology visits after melanoma diagnosis was low. Greater adherence may promote better patient survival but warrants confirmation in further research including randomized trials.

Risk of Repeat Psychiatric Emergency Department Visits in the Postpartum Period: A Population-Based Retrospective Cohort Study.

STUDY OBJECTIVE: Approximately 1 in 100 postpartum individuals visit an emergency department (ED) for a psychiatric reason. Repeat visits can signify problems with the quality of care received during or after the initial visit; this study aimed to understand risk for repeat postpartum psychiatric ED visits. METHODS: This population-based cohort study used Ontario, Canada health administrative data available through ICES (formerly the Institute for Clinical Evaluative Sciences) to identify all individuals discharged from postpartum psychiatric ED visits (2008 to 2021) and measured the proportion with one or more repeat psychiatric ED visit within 30 days. Using modified Poisson regression, we calculated the association between one or more repeat visits and sociodemographic, medical, obstetric, infant, continuity of care, past service use, and index ED visit characteristics both overall and stratified by psychiatric diagnosis. RESULTS: Of 14,100 individuals, 11.7% had one or more repeat psychiatric ED visits within 30 days. Repeat visit risk was highest for those with schizophrenia-spectrum disorders (28.2%, adjusted risk ratio 2.41; 95% confidence interval 1.88 to 3.08, versus 9.5% anxiety referent). Low (versus no) psychiatric care continuity, prior psychiatric ED visits and admissions, and initial visits within 90 days postpartum were also associated with increased risk, whereas intentional self-injury was associated with reduced risk. In diagnosis-stratified analyses, the factors most consistently associated with repeat ED visits were past psychiatric ED visits and admissions, and initial visits within 90 days postpartum. CONCLUSIONS: Over 1 in 10 postpartum psychiatric ED visits are followed by a repeat visit within 30 days. Targeted approaches are needed across clinical populations to reduce repeat ED visits in this population with young infants.

Patterns of multiple chronic conditions in pregnancy: Population-based study using latent class analysis.

BACKGROUND: Adults with multiple chronic conditions (MCC) are a heterogeneous population with elevated risk of future adverse health outcomes. Yet, despite the increasing prevalence of MCC globally, data about MCC in pregnancy are scarce. OBJECTIVES: To estimate the population prevalence of MCC in pregnancy and determine whether certain types of chronic conditions cluster together among pregnant women with MCC. METHODS: We conducted a population-based cohort study in Ontario, Canada, of all 15-55-year-old women with a recognised pregnancy, from 2007 to 2020. MCC was assessed from a list of 22 conditions, identified using validated algorithms. We estimated the prevalence of MCC. Next, we used latent class analysis to identify classes of co-occurring chronic conditions in women with MCC, with model selection based on parsimony, clinical interpretability and statistical fit. RESULTS: Among 2,014,508 pregnancies, 324,735 had MCC (161.2 per 1000, 95% confidence interval [CI] 160.6, 161.8). Latent class analysis resulted in a five-class solution. In four classes, mood and anxiety disorders were prominent and clustered with one additional condition, as follows: Class 1 (22.4% of women with MCC), osteoarthritis; Class 2 (23.7%), obesity; Class 3 (15.8%), substance use disorders; and Class 4 (22.1%), asthma. In Class 5 (16.1%), four physical conditions clustered together: obesity, asthma, chronic hypertension and diabetes mellitus. CONCLUSIONS: MCC is common in pregnancy, with sub-types dominated by co-occurring mental and physical health conditions. These data show the importance of preconception and perinatal interventions, particularly integrated care strategies, to optimise treatment and stabilisation of chronic conditions in women with MCC.

Pediatric Patients Hospitalized With Eating Disorders in Ontario, Canada, Over Time.

Importance: Understanding the evolving characteristics of pediatric patients hospitalized for eating disorders is important to ensure that services and treatments align with patient needs. Objective: To examine temporal trends in the rates of hospitalizations for pediatric eating disorders by clinical and demographic characteristics in Ontario, Canada, over a 17-year period. Design, Setting, and Participants: This population-based, repeated, cross-sectional study used linked health administrative and demographic databases in Ontario, Canada, to identify individuals aged 5 to 17 years hospitalized with eating disorder diagnoses from April 1, 2002, to March 31, 2020. Data analyses were performed from May 2021 to June 2023. Exposure: Fiscal year (April 1-March 31) of eating disorder hospitalization. Main Outcomes and Measures: Outcomes of interest were absolute and relative changes in pediatric eating disorder hospitalization rates overall and stratified by patient sex, age groups, and eating disorder diagnostic groups. Results: Over the study period, there were 11 654 pediatric eating disorder hospitalizations, of which 5268 (45.2%) were for anorexia nervosa and 1374 (11.8%) were for bulimia nervosa. There were a total of 10 648 hospitalizations (91.4%) among female patients, and the median (IQR) age was 15.0 (14-0-16.0) years. Hospitalization rates increased 139% from 2002 to 2019, from 2.0 per 10 000 population to 4.8 per 10 000 population. The largest relative changes were observed among male patients (416%; from 0.2 per 10 000 population to 1.1 per 10 000 population), individuals aged 12 to 14 years (196%; from 2.2 per 10 000 population to 6.6 per 10 000 population), and individuals with eating disorders other than anorexia or bulimia nervosa (255%; from 0.6 per 10 000 population to 2.1 per 10 000 population). Male patients, younger adolescents, and individuals with other eating disorders also represented larger proportions of hospitalizations by fiscal 2019. Conclusions and Relevance: In this cross-sectional study of eating disorder hospitalizations, pediatric hospitalizations increased over time, particularly among populations traditionally considered atypical. Existing eating disorder programs must adapt to accommodate changing patient presentations and increased volumes to ensure effective care delivery.

Mental Illness Following Physical Assault Among Children.

Importance: Physical assault during childhood is common and can lead to lasting mental health problems. Yet, there are few studies on the patterns of mental illness (ie, timing of onset, type, and acuity) in survivors of physical assault. Objective: To determine the risk of incident health record diagnoses of mental illness among children who experienced assault compared with children who did not. Design, Setting, and Participants: This population-based matched cohort study used linked health administrative data sets in Ontario, Canada. Children aged 0 to 13 years who experienced an incident physical assault between 2006 and 2014 were age-matched (1:4) to children who had not experienced assault and followed up for a minimum of 5 years. Data were analyzed from January 2020 to March 2022. Exposure: Physical assault resulting in hospitalization or an emergency department (ED) visit between the ages of 0 and 13 years. Main Outcomes and Measures: The primary outcome was incident health record diagnosis of mental illness measured as any physician or hospital mental health care use or completed suicide. Secondary outcome measures included the acuity of incident mental illness and mental illness diagnostic category. Cox proportional hazards regression analysis generated hazard ratios (HR) for incident mental illness. Results: A total of 21 948 children unexposed to assault and 5487 exposed to assault were included in the study with a mean (SD) age of 7.0 (4.6) years. There were more boys in the group that experienced assault (3006 individuals [54.8%]) compared with the group who did not (9909 individuals [45.1%]). Compared with children unexposed to assault, those exposed were more likely to be in the highest deprivation index quintile (standardized difference, 0.21) and live in rural areas (standardized difference, 0.48). Their mothers more often had active mental illness (standardized difference, 0.35). More than one-third of the exposed children had a health record diagnosis of mental illness (2219 children [38.6%]; incidence rate (IR), 53.3 per 1000 person-years) compared with 23.4% (5130 children; IR, 32.2 per 1000 person-years) of unexposed children, with an overall adjusted hazard ratio (aHR) of 1.96 (95% CI, 1.85-2.08). The greatest risk was observed in the first year following the assault (aHR, 3.08; 95% CI, 2.68-3.54). In both groups, nonpsychotic disorders were the most common type of mental illness. Initial mental illness diagnoses occurred in an acute care setting for 14.0% of exposed children (769 children) vs 2.8% of unexposed children (609 children). Conclusions and Relevance: In this population-based matched cohort study, children who experienced assault had, on average, a 2 times higher risk of receiving a mental illness diagnosis and were more likely than children who had not experienced assault to present to acute care for mental illness. Early intervention to support mental health of assaulted children is warranted, particularly in the first year following assault.

Comparison of Emergency Department Use Between Pregnant People With and Without Disabilities in Ontario, Canada.

Importance: Emergency department (ED) use in pregnancy is common and occurs for a variety of reasons, including obstetrical complications, exacerbated underlying conditions, and inadequate outpatient health care access. People with disabilities have elevated rates of certain medical, psychiatric, and obstetrical conditions as well as inadequate access to prenatal care; their risk of ED use in pregnancy is not known, however. Objective: To compare the risk of ED use in pregnancy among people with physical, sensory, and intellectual or developmental disabilities with those without disabilities. Design, Setting, and Participants: Population-based cohort study leveraging linked administrative health data sets in Ontario, Canada, April 2003 to March 2019. Analysis included all recognized pregnancies to people with a preexisting physical, sensory, intellectual or developmental, or 2 or more (multiple) disabilities, and those without a disability. Data were analyzed from May 2022 to January 2023. Exposure: Disability was ascertained using algorithms applied to 2 or more outpatient physician visits or 1 or more ED visits or hospitalizations before conception. Main outcomes and measures: Modified Poisson regression-generated adjusted relative risks (aRR) and 95% CIs for any ED visit in pregnancy, from the estimated conception date up to the end of the pregnancy, adjusted for age, parity, income quintile, rurality, immigrant status, and preexisting chronic conditions, mental illness, and substance use disorders. Results: The cohort included 2 659 895 pregnant people with physical (221 739 participants; mean [SD] age, 29.8 [6.1] years), sensory (71 891 participants; mean [SD] age, 29.1 [6.4] years), intellectual or developmental (3877 participants; mean [SD] age, 26.1 [6.7] years), and multiple disabilities (14 359 participants; mean [SD] age, 29.5 [6.5] years), and pregnant people without a disability (2 348 023 participants; mean [SD] age, 29.4 [5.9] years). The rate of ED visits in pregnancy was 25.4% in people without a disability (596 771 visits). Relative to these individuals, the aRR for ED use was elevated in people with physical (aRR, 1.26; 95% CI, 1.25-1.27), sensory (aRR, 1.15; 95% CI, 1.14-1.17), intellectual or developmental (aRR, 1.33; 95% CI, 1.28-1.38), and multiple disabilities (aRR, 1.43; 95% CI, 1.40-1.46). Conclusions and Relevance: In this population-based study, people with disabilities were at elevated risk of ED use in pregnancy. This finding underscores the need for research on the benefits of proactive strategies to manage preexisting conditions in these individuals, improve their access to outpatient obstetrical and medical care, and prepare them for when ED visits occur.

Population-Based Repeated Cross-Sectional Study of Hospitalizations for Comorbid Physical and Psychiatric Disorders in Young Adults in Ontario, Canada.

PURPOSE: To measure trends in the rates and costs of hospitalizations over a 15-year period among young adults with physical and/or psychiatric disorders. METHODS: This population-based, repeated cross-sectional study identified all 18- to 26- year-olds hospitalized in Ontario, Canada from April 1, 2003 and March 31, 2018 (fiscal years 2003-2017). Using discharge diagnoses, we assigned hospitalizations to one of four categories: 1) psychiatric disorder only; 2) primary psychiatric disorder with comorbid physical illness; 3) primary physical with comorbid psychiatric disorder; and 4) physical illness only. We compared health service utilization and changes in rates of hospitalizations over time using restricted cubic spline regression. Secondary outcome measures included change in hospital costs for each hospitalization category over the study period. RESULTS: Of 1,076,951 hospitalizations in young adults (73.7% female), 195,726 (18.2%) had a psychiatric disorder (either primary or comorbid). There were 129,676 hospitalizations (12.0%) with psychiatric disorders only, 36,287 (3.4%) with primary psychiatric and comorbid physical disorders, 29,763 (2.8%) with primary physical and comorbid psychiatric disorders, and 881,225 (81.8%) with physical disorders only. Rates of hospitalization for psychiatric disorders only increased 81% from 4.32 to 7.84/1,000 population, and those with physical health disorders with comorbid psychiatric disorders increased 172% from 0.47 to 1.28/1,000 population. Substance-related disorders were the most common comorbid psychiatric disorders among youth hospitalized for physical illness and increased 260% from 0.9 to 3.3/1,000 population. DISCUSSION: Hospitalizations among young adults with primary and comorbid psychiatric disorders have increased significantly over the past 15 years. Health system resources should be adequately directed to meet the shifting and complex needs of hospitalized young adults.

Disparities in Suicide-Related Behaviors Across Sexual Orientations by Gender: A Retrospective Cohort Study Using Linked Health Administrative Data.

OBJECTIVE: The authors used a population-representative sample and health administrative data to quantify suicide-related behavior leading to acute care or deaths across self-identified heterosexual, gay/lesbian, and bisexual individuals. METHODS: Data from a population-based survey (N=123,995) were linked to health administrative data (2002-2019), and differences in time to suicide-related behavior events across sexual orientations were examined using Cox proportional hazards regression. RESULTS: The crude incidence rates of suicide-related behavior events per 100,000 person-years were 224.7 for heterosexuals, 664.7 for gay/lesbian individuals, and 5,911.9 for bisexual individuals. In fully adjusted (gender-combined) models, bisexual individuals were 2.98 times (95% CI=2.08-4.27) more likely to have an event, and gay men and lesbians 2.10 times (95% CI=1.18-3.71) more likely, compared with heterosexual individuals. CONCLUSIONS: In a large population-based sample of Ontario residents, using clinically relevant outcomes, the study found gay/lesbian and bisexual individuals to be at elevated risk of suicide-related behavior events. Increased education among psychiatric professionals is needed to improve awareness of and sensitivity to the elevated risk of suicide-related behavior among sexual minority individuals, and further research on interventions is needed to reduce such behaviors.

Risk of hospital admission after discharge from postpartum psychiatric emergency department visits: A focus on the social determinants of health.

OBJECTIVE: Of those with postpartum psychiatric emergency department (ED) visits, a minority of receive hospital admission at their initial visit. Among those discharged, we aimed to determine subsequent risk of psychiatric admission, and understand how social determinants of health (SDOH) - individually and collectively - impact this risk. METHOD: From all postpartum individuals discharged from psychiatric ED visits in Ontario, Canada (2008-2020)(n = 13,130), we generated adjusted relative risks (aRR) for psychiatric inpatient admission within 365 days post-ED visit by four SDOH (age, neighbourhood income, community size, immigration) and other clinical factors. Using latent class analysis (LCA) to identify subgroups based on clustering of SDOH, we then compared adjusted risk across subgroups. RESULTS: Psychiatric admission occurred for 9.5% (n = 1242) within 365 days. Across SDOH, risk was lower among adolescents (vs. ≥35 years aRR 0.80, 95%CI 0.65-0.97) and immigrants (<5 years in Canada vs. Canadian-born/long-term residents 0.70, 0.51-0.96; ≥5 years in Canada 0.79, 0.65-0.95). Among four identified subgroups, compared to the "older/urban/high-income" subgroup (11.1% admission), the "urban/immigrant/low-income" (7.6%; 0.68, 0.55-0.82) and "young/rural/low-income" subgroups (9.7%; 0.78, 0.63-0.96), but not the "semi-urban/middle-income" subgroup (9.5%; 0.86, 0.73-1.01), were at lower admission risk. CONCLUSIONS: Future research is needed to explore reasons for SDOH-based differences in admission risk, and inform equitable postpartum services.

Physical disability and venous thromboembolism during pregnancy and the postpartum period: a population-based cohort study.

BACKGROUND: Pregnancy and the postpartum period are a high-risk time for venous thromboembolism (VTE). Decreased mobility is also a major risk factor. However, the risk of peripregnancy VTE among individuals with physical disabilities is unknown. OBJECTIVES: To compare the risk of peripregnancy VTE between people with a physical disability and those without a physical disability. METHODS: This population-based cohort study comprised all births in Ontario, Canada, from 2007 to 2018. Physical disability was defined as a condition diagnosed before conception that was likely to result in restricted mobility. Modified Poisson regression was used to compare the risk of VTE during pregnancy and up to 6 weeks postpartum between people with a physical disability and those without a physical disability. Adjusted relative risks (aRRs) were calculated, controlling for demographics, history of VTE, thrombophilia, and other comorbidities. An additional analysis was used to evaluate the risk of peripregnancy VTE among people with physical disabilities who used a mobility aid. RESULTS: Of 1 220 822 eligible people, 13 791 (1.1%) had a physical disability. VTE occurred during pregnancy or up to 6 weeks of the postpartum period in 0.85% of the individuals with a physical disability and 0.47% of those without a physical disability (aRR, 1.52; 95% CI, 1.26-1.83). The rate of VTE was notably higher in those with a physical disability requiring a mobility aid (3.0%), generating an aRR of 3.05 (95% CI, 1.45-6.41), than in those without a physical disability. CONCLUSION: Pregnant people with a physical disability, especially those using a mobility aid, are at an increased risk of VTE. Anticoagulant prophylaxis could be considered in this group, especially in the presence of additional risk factors.

Sex differences in pre-incarceration mental illness, substance use, injury and sexually transmitted infections and health service utilization: a longitudinal linkage study of people serving federal sentences in Ontario.

BACKGROUND: People who experience incarceration have poorer health than the general population. Yet, we know little about the health and health service utilization of people during the critical period prior to their incarceration, relative to during incarceration and post-release. In this study, we conducted a longitudinal cohort study of 39,498 adults in Ontario, Canada between January 1, 2002, and December 31, 2011 using linked administrative health and correctional data to describe mental illness, substance use, injury, sexually transmitted infections and health service utilization of men and women in federal prisons in the 3 years prior to their incarceration, compared to a matched group. RESULTS: We found that, in the 3-year period prior to their incarceration, men (n = 6,134) and women (n = 449) experiencing their first federal sentence had poorer health across all indicators examined (e.g., psychosis, drug/alcohol use, and self-harm) and higher outpatient psychiatric and emergency department visits, compared with the matched group. Women in the pre-incarceration group exhibited a higher prevalence of self-harm and substance use, relative to women in the matched comparison group and higher relative prevalence to that of men in the pre-incarceration group, compared to their matched counterparts. CONCLUSIONS: Disparities in health and health service utilization are gendered and exist prior to incarceration. The gendered nature of these findings, specifically the significantly higher prevalence of poor health among women across several indicators, necessitates a focus on the social and systemic factors that contribute to these disparities. Gender-responsive and trauma-informed primary, secondary, and tertiary prevention strategies, alongside transformative approaches to justice should be considered in addressing the health needs of men and women who experience incarceration.

Disability and in-hospital breastfeeding practices and supports in Ontario, Canada: a population-based study.

BACKGROUND: Breastfeeding provides infants with nutrients required for optimal growth and development. We aimed to examine breastfeeding practices and supports that promote exclusive breastfeeding during the birth hospital stay among birthing parents with physical disabilities, sensory disabilities, intellectual or developmental disabilities, and multiple disabilities compared with those without a disability. METHODS: This population-based cohort study was done in Ontario, Canada. We accessed and analysed health administrative data from ICES and the Better Outcomes Registry & Network. We included all birthing parents aged 15-49 years who had a singleton livebirth between April 1, 2012, and March 31, 2018. The study outcomes were breastfeeding practices and supports that promoted exclusive breastfeeding during the birth hospital stay, conceptualised based on WHO-UNICEF Baby Friendly Hospital Initiative guidelines. Individuals with a physical disability, sensory disability, intellectual or developmental disability, or two or more (multiple) disabilities, identified using diagnostic algorithms, were compared with individuals without disabilities on the opportunity to initiate breastfeeding, in-hospital breastfeeding, exclusive breastfeeding at hospital discharge, skin-to-skin contact, and provision of breastfeeding assistance. Relative risks (RRs) were estimated using modified Poisson regression. FINDINGS: Our cohort included 634 111 birthing parents, of whom 54 476 (8·6%) had a physical disability, 19 227 (3·0%) had a sensory disability, 1048 (0·2%) had an intellectual or developmental disability, 4050 (0·6%) had multiple disabilities, and 555 310 (87·6%) had no disability. Individuals with intellectual or developmental disabilities were less likely than those without a disability to have an opportunity to initiate breastfeeding (adjusted RR 0·82, 95% CI 0·76-0·88), any in-hospital breastfeeding (0·85, 0·81-0·88), exclusive breastfeeding at hospital discharge (0·73, 0·67-0·79), skin-to-skin contact (0·90, 0·87-0·94), and breastfeeding assistance (0·85, 0·79-0·91). Those with multiple disabilities were less likely to have an opportunity to initiate breastfeeding (0·93, 0·91-0·96), any in-hospital breastfeeding (0·93, 0·92-0·95), exclusive breastfeeding at hospital discharge (0·90, 0·87-0·93), skin-to-skin contact (0·93, 0·91-0·95), and breastfeeding assistance (0·95, 0·92-0·98). Differences for individuals with a physical or sensory disability only were mostly non-significant. INTERPRETATION: Our findings show disparities in breastfeeding outcomes between individuals without a disability and individuals with intellectual or developmental disabilities or multiple disabilities, but not individuals with physical or sensory disabilities. There is a need for further research on the factors that contribute to breastfeeding intentions, practices, and supports in people with intellectual or developmental disabilities and multiple disabilities, especially factors that affect breastfeeding decision making. FUNDING: National Institutes of Health and the Canada Research Chairs Program.

Disability and Interpersonal Violence in the Perinatal Period.

OBJECTIVE: To compare the risk of interpersonal violence experienced by pregnant and postpartum individuals with physical disabilities, sensory disabilities, or intellectual or developmental disabilities with those without disabilities, and to examine whether a prepregnancy history of interpersonal violence puts individuals with disabilities, at excess risk of interpersonal violence in the perinatal period. METHOD: This population-based study included all individuals aged 15-49 years with births in Ontario, Canada, from 2004 to 2019. Individuals with physical (n=147,414), sensory (n=47,459), intellectual or developmental (n=2,557), or multiple disabilities (n=9,598) were compared with 1,594,441 individuals without disabilities. The outcome was any emergency department visit, hospital admission, or death related to physical, sexual, or psychological violence between fertilization and 365 days postpartum. Relative risks (RRs) were adjusted for baseline social and health characteristics. Relative excess risk due to interaction (RERI) was estimated from the joint effects of disability and prepregnancy violence history; RERI>0 indicated positive interaction. RESULTS: Individuals with physical (0.8%), sensory (0.7%), intellectual or developmental (5.3%), or multiple disabilities (1.8%) were more likely than those without disabilities (0.5%) to experience perinatal interpersonal violence. The adjusted RR was 1.40 (95% CI 1.31-1.50) in those with physical disabilities, 2.39 (95% CI 1.98-2.88) in those with intellectual or developmental disabilities, and 1.96 (95% CI 1.66-2.30) in those with multiple disabilities. Having both a disability and any violence history produced a positive interaction for perinatal interpersonal violence (adjusted RERI 0.87; 95% CI 0.47-1.29). CONCLUSION: The perinatal period is a time of relative high risk for interpersonal violence among individuals with pre-existing disabilities, especially those with a history of interpersonal violence.

Perinatal mental illness among women with disabilities: a population-based cohort study.

PURPOSE: To examine the risk of perinatal mental illness, including new-onset disorders and recurrent or ongoing use of mental health care, comparing women with physical, sensory, intellectual/developmental, and multiple disabilities to those without a disability. METHODS: From all women aged 15-49 years with a singleton birth in Ontario, Canada (2003-2018), those with physical (n = 144,972), sensory (n = 45,249), intellectual/developmental (n = 2,227), and ≥ 2 of these disabilities ("multiple disabilities"; n = 8,883), were compared to 1,601,363 without a disability on risk of healthcare system contact for mental illness from conception to 365 days postpartum. The cohort was stratified into: (1) no pre-pregnancy mental illness (to identify new-onset illness), (2) distal mental illness (> 2 years pre-pregnancy, to identify recurrent illness), and (3) recent mental illness (0-2 years pre-pregnancy, to identify ongoing contact). Modified Poisson regression generated relative risks (aRR), adjusted for age, parity, income quintile, and rural residence. RESULTS: About 14.7, 26.5, and 56.6% of women with no disabilities had new-onset, recurrent, and ongoing contact for mental illness, respectively, perinatally. Risks were elevated across disability groups for new-onset (physical: aRR 1.18, 95% CI 1.16-1.20; sensory: 1.11, 1.08-1.15; intellectual/developmental: 1.38, 1.17-1.62; multiple: 1.24, 1.15-1.33), recurrent (physical: 1.10, 1.08-1.12; sensory 1.06, 1.02-1.09; intellectual/developmental: 1.24, 1.11-1.37; multiple: 1.16, 1.09-1.23), and ongoing contact (physical: 1.09, 1.08-1.10; sensory: 1.08, 1.06-1.10; intellectual/developmental: 1.31, 1.26-1.37; multiple: 1.20, 1.16-1.23). CONCLUSION: The heightened use of new, recurrent, and ongoing mental health care across disability groups in the perinatal period suggests that adapted screening and intervention approaches are critical to optimize perinatal mental health in this population.

Follow-up after post-partum psychiatric emergency department visits: an equity-focused population-based study in Canada.

BACKGROUND: Emergency department visits for a psychiatric reason in the post-partum period represent an acute need for mental health care at a crucial time, but little is known about the extent of timely outpatient follow-up after these visits or how individual and intersecting social determinants of health influence this outcome. This study aimed to examine outpatient mental health care follow-up by a physician in the 30 days after an individual attended the emergency department for a psychiatric reason in the post-partum period and understand how social determinants of health affect who receives follow-up care. METHODS: In this population-based cohort study, routinely collected health data from Ontario, Canada were accessed through ICES to identify all post-partum individuals whose sex was listed as female on their health card and who had attended an emergency department in Ontario before the COVID-19 pandemic for a psychiatric reason. Individuals admitted to hospital at the time of the emergency department visit, who died during the visit, or who left without being seen were excluded from the study. Ethnicity data for individuals were not collected. The primary outcome was the proportion of individuals with any outpatient physician (psychiatrist or family physician) visit for a mental health reason within 30 days of the index emergency department visit. Family physician mental health visits were identified using a validated algorithm for Ontario Health Insurance Plan-billed visits and mental health diagnostic codes for community health centre visits. We examined the associations between social determinants of health (age, neighbourhood income, community size, immigration, neighbourhood ethnic diversity) and who received an outpatient mental health visit. We used modified Poisson regression adjusting for the other social determinants of health, clinical, and health services characteristics to examine independent associations with follow-up, and conditional inference trees to explore how social determinants of health intersect with each other and with clinical and health services characteristics in relation to follow-up. FINDINGS: We analysed data collected between April 1, 2008, and March 10, 2020, after exclusions we identified 12 158 people who had attended the emergency department for a psychiatric reason in the post-partum period (mean age 26·9 years [SD 6·2]; range 13-47); 9848 individuals lived in an urban area, among these 1518 (15·5%) were immigrants and 2587 (26·3%) lived in areas with high ethnic diversity. 5442 (44·8%) of 12 158 individuals received 30-day follow-up. In modified Poisson regression models, younger age, lower neighbourhood income, smaller community size, and being an immigrant were associated with a lower likelihood of follow-up. In the CTREE, similar variables were important, with several intersections between social determinants of health and between social determinants of health and other variables. INTERPRETATION: Fewer than half of emergency department visits for a psychiatric reason in the post-partum period were followed by timely outpatient care, with social-determinants-of-health-based disparities in access to care. Improvements in equitable access to post-emergency department mental health care are urgently needed in this high-risk post-partum population. FUNDING: Department of Psychiatry, University of Toronto; Canadian Institutes of Health Research.

The Mortality Risk of Proton Pump Inhibitors in 1.9 Million US Seniors: An Extended Cox Survival Analysis.

BACKGROUND & AIMS: Observational studies have linked proton pump inhibitors (PPIs) with increased risk of mortality and other safety outcomes, in contradiction with a recent PPI randomized controlled trial (RCT). Observational studies may be prone to reverse causality, where deaths are attributed to the treatment rather than the conditions that are treated (protopathic bias). METHODS: We analyzed an incident drug user cohort of 1,930,728 elderly Medicare fee-for-service beneficiaries to evaluate the PPI-associated risk of death with a Cox regression analysis with time-varying covariates and propensity score adjustments. To correct for protopathic bias which occurs when a given drug is associated with prodromal signs of death, we implemented a lag-time approach by which any study drug taken during a 90-day look-back window before each death was disregarded. RESULTS: Among 1,930,728 study individuals, 80,972 (4.2%) died during a median 3.8 years of follow-up, yielding an overall unadjusted death rate/1000 person-years of 9.85; 14.31 for PPI users and 7.93 for non- users. With no lag-time, PPI use (vs no use) was associated with 10% increased mortality risk (adjusted HR=1.10; 95% CI 1.08-1.12). However, with a lag-time of 90 days, mortality risk associated with PPI use was near zero (adjusted HR=1.01; 95% CI 0.99-1.02). CONCLUSION: Given the usage patterns of PPIs in patients with conditions that may presage death, protopathic bias may explain the association of PPIs with increased risk of death reported in observational studies.