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Background and Hypothesis Maternal schizophrenia heightens the risk for certain perinatal complications, yet it is not known to what degree future childhood chronic health conditions (Childhood-CC) might arise. Study Design This population-based cohort study using health administrative data from Ontario, Canada (1995–2018) compared 5066 children of mothers with schizophrenia to 25 324 children of mothers without schizophrenia, propensity-matched on birth-year, maternal age, parity, immigrant status, income, region of residence, and maternal medical and psychiatric conditions other than schizophrenia. Cox proportional hazard models generated hazard ratios (HR) and 95% confidence intervals (CI) for incident Childhood-CCs, and all-cause mortality, up to age 19 years. Study Results Six hundred and fifty-six children exposed to maternal schizophrenia developed a Childhood-CC (20.5/1000 person-years) vs. 2872 unexposed children (17.1/1000 person-years)—an HR of 1.18, 95% CI 1.08–1.28. Corresponding rates were 3.3 vs. 1.9/1000 person-years (1.77, 1.44–2.18) for mental health Childhood-CC, and 18.0 vs. 15.7/1000 person-years (1.13, 1.04–1.24) for non-mental health Childhood-CC. All-cause mortality rates were 1.2 vs. 0.8/1000 person-years (1.34, 0.96–1.89). Risk for children exposed to maternal schizophrenia was similar whether or not children were discharged to social service care. From age 1 year, risk was greater for children whose mothers were diagnosed with schizophrenia prior to pregnancy than for children whose mothers were diagnosed with schizophrenia postnatally. Conclusions A child exposed to maternal schizophrenia is at elevated risk of chronic health conditions including mental and physical subtypes. Future research should examine what explains the increased risk particularly for physical health conditions, and what preventive and treatment efforts are needed for these children.

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.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.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.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.Department of Psychiatry, University of Toronto; Canadian Institutes of Health Research.

OBJECTIVE: To determine common sources of concern among pregnant individuals during the coronavirus disease 2019 (COVID-19) pandemic. DESIGN: A cross-sectional, open, online electronic survey from May 9, 2020, to June 14, 2020. SETTING: Electronic survey open internationally and advertised through Canadian-based social media platforms. PARTICIPANTS: Eligible participants understood English and had been pregnant during the COVID-19 pandemic (ie, were pregnant at the time of survey completion or had delivered an infant on or after March 11, 2020). MAIN OUTCOME MEASURES: Potential sources of concern related to the pandemic, calculated as the proportion of participants who endorsed each concern among those for whom the concern was relevant. Differences in the proportion of individuals endorsing each concern were compared by parity using modified Poisson regression. Frequency of concerns was examined in terms of level of distress, as per the Kessler Psychological Distress Scale (K6), using multivariable linear regression. RESULTS: Out of 1477 participants, 87.3% were Canadian. Top concerns included the following: hospital policies related to support persons during labour (80.9%), not being able to introduce the baby to family and friends (80.1%), and developing COVID-19 while pregnant (79.2%). Primiparous participants were more likely than multiparous participants to be concerned about accessing in-person prenatal classes (51.5% vs 13.3%; relative risk = 3.88; 95% CI 2.02 to 4.98) and cancellation of hospital tours (35.0% vs 5.6%, relative risk = 6.26; 95% CI 4.25 to 9.20), among other concerns. The mean (SD) K6 score was 6.7 (3.8) within the moderate to high distress range. Number of concerns reported was associated with K6 score in both primiparous (β = 0.24; 95% CI 0.20 to 0.29; P < .0001) and multiparous (β = 0.30; 95% CI 0.24 to 0.36; P < .0001) individuals. CONCLUSION: Pregnant individuals have unique concerns during the COVID-19 pandemic and the findings indicate the importance of targeted support strategies to meet the particular needs of both primiparous and multiparous pregnant individuals.

BACKGROUND: It is unclear whether the clinical burden of postpartum mental illness has increased during the COVID-19 pandemic. We sought to compare physician visit rates for postpartum mental illness in Ontario, Canada, during the pandemic with rates expected based on prepandemic patterns. METHODS: In this population-based, repeated cross-sectional study using linked health administrative databases in Ontario, Canada, we used negative binomial regression to model expected visit rates per 1000 postpartum people for March–November 2020 based on prepandemic data (January 2016–February 2020). We compared observed visit rates to expected visit rates for each month of the pandemic period, generating absolute rate differences, incidence rate ratios (IRRs) and their 95% confidence intervals (CIs). The primary outcome was a visit to a primary care physician or a psychiatrist for any mental disorder. We stratified analyses by maternal sociodemographic characteristics. RESULTS: In March 2020, the visit rate was 43.5/1000, with a rate difference of 3.11/1000 (95% CI 1.25–4.89) and an IRR of 1.08 (95% CI 1.03–1.13) compared with the expected rate. In April, the rate difference (10.9/1000, 95% CI 9.14–12.6) and IRR (1.30, 95% CI 1.24–1.36) were higher; this level was generally sustained through November 2020. From April–November, we observed elevated visit rates across provider types and for diagnoses of anxiety, depressive and alcohol or substance use disorders. Observed increases from expected visit rates were greater for people 0–90 days postpartum compared with 91–365 days postpartum; increases were small among people living in low-income neighbourhoods. Public health units in the northern areas of the province did not see sustained elevations in visit rates after July; southern health units had elevated rates through to November. INTERPRETATION: Increased visits for mental health conditions among postpartum people during the first 9 months of the COVID-19 pandemic suggest an increased need for effective and accessible mental health care for this population as the pandemic progresses.

Background Decisions about antidepressant use in pregnancy are complex. Little is known about how pregnancy-planning and already pregnant women making these decisions differ. Methods In 95 Canadian women having difficulty deciding whether to take antidepressants in pregnancy, we compared sociodemographic factors, clinical characteristics, and treatment intent between women planning pregnancy (preconception women) and currently-pregnant women. Results About 90% of preconception women (n = 55) were married or cohabitating and university-educated, and over 60% had an annual income of > 80,000 CAD/year; this was not different from currently-pregnant women (n = 40). Almost all women had previously used antidepressants, but preconception women were more likely to report current use (85.5% vs. 45.0%). They were more likely to have high decisional conflict (83.6% vs. 60.0%) and less likely to be under the care of a psychiatrist (29.1% vs. 52.5%). Preconception women were more likely than pregnant women to report the intent to use antidepressants (60% vs. 32.5%, odds ratio 3.11, 95% confidence interval 1.33–7.32); this was partially explained by between-group differences in current antidepressant use. Conclusions Preconception women were more likely than pregnant women to intend to use antidepressants in pregnancy, in part because more of them were already using this treatment. Strategies to enhance support for decision-making about antidepressant medication use in pregnancy may need to be tailored differently for pregnancy-planning and already pregnant women.

Background Telemedicine adoption has grown significantly due to the coronavirus of 2019 pandemic; however, it remains unclear what the impact of widespread telemedicine use is on healthcare utilization among individuals with psychosis. Objectives To investigate the impact of telemedicine use on changes in healthcare utilization among patients with chronic psychotic disorders (CPDs). Study Design We conducted a population-based, retrospective propensity-matched cohort study using healthcare administrative data in Ontario, Canada. Patients were included if they had at least one ambulatory visit between March 14, 2020 and September 30, 2020 and a CPD diagnosis any time before March 14, 2020. Telemedicine users (2+ virtual visits after March 14, 2020) were propensity score-matched 1:1 with standard care users (minimum of 1 in-person or virtual ambulatory visit and maximum of 1 virtual visit after March 14, 2020) based on several baseline characteristics. Monthly use of various healthcare services was compared between the two groups from 12 months before to 3 months after their index in-person or virtual ambulatory visit after March 14, 2020 using generalized estimating equations (eg, hospitalizations, emergency department [ED] visits, and outpatient physician visits). The slope of change over the study period (ie, rate ratio) as well as a ratio of slopes, were calculated for both telemedicine and standard care groups for each outcome. Study Results A total of 18 333 pairs of telemedicine and standard care patients were identified after matching (60.8% male, mean [SD] age 45.4 [16.3] years). There was a significantly greater decline across time in the telemedicine group compared to the standard care group for ED visits due to any psychiatric conditions (ratio of slopes for telemedicine vs standard care (95% CI), 0.98 (0.98 to 0.99)). However, declines in primary care visit rates (ratio of slopes for telemedicine vs standard care (1.01 (1.01 to 1.02)), mental health outpatient visits with primary care (1.03 (1.03 to 1.04)), and all-cause outpatient visits with primary care (1.01 (1.01 to 1.02)), were steeper among the standard care group than telemedicine group. Conclusions Overall, patients with CPDs appeared to benefit from telemedicine as evidenced by increased outpatient healthcare utilization and reductions in ED visits due to psychiatric conditions. This suggests that telemedicine may have allowed this patient group to have better access and continuity of care during the initial waves of the pandemic.

The perinatal period may uniquely impact the mental health and wellbeing of lesbian, gay, bisexual, transgender, queer, and Two-Spirit (LGBTQ2S+) childbearing individuals.To characterise and synthesise the experiences of LGBTQ2S+ childbearing individuals regarding perinatal mental health, including symptomatology, access to care and care-seeking.We conducted and reported a systematic review following PRISMA guidelines of eight databases (EMBASE, MEDLINE-OVID, CINAHL, Scopus, Web of Science: Core Collection, Sociological Abstracts, Social Work Abstract, and PsycINFO) from inception to 1 March 2021.Original, peer-reviewed research related to LGBTQ2S+ mental health was eligible for inclusion if the study was specific to the perinatal period (defined as pregnancy planning, conception, pregnancy, childbirth, and first year postpartum; includes miscarriages, fertility treatments and surrogacy).Findings were synthesised qualitatively via meta-aggregation using the Joanna Briggs Institute System for the Unified Management, Assessment and Review of Information (JBI SUMARI), and the ConQual approach.Our systematic search included 26 eligible studies encompassing 1199 LGBTQ2S+ childbearing participants. Using the JBI SUMARI approach, we reported 65 results, which we synthesised as six key findings. The studies described unique considerations for LGBTQ2S+ individuals' perinatal mental health, including heteronormativity, cisnormativity, isolation, exclusion from traditional pregnancy care, stigma, and distressing situations from the gendered nature of pregnancy. Many participants described a lack of knowledge from healthcare providers related to care for LGBTQ2S+ individuals. In addition, LGBTQ2S+ individuals described barriers to accessing mental healthcare and gaps in health systems. Strategies to improve care include provider education, avoidance of gendered language, documentation of correct pronouns, trauma-informed practices, cultural humility training and tailored care for LGBTQ2S+ people.Pregnancy, postpartum, and the perinatal period uniquely impacts the mental health and wellbeing of LGBTQ2S+individuals, largely due to systems-level inequities and exclusion from perinatal care. Healthcare providers should implement the identified strategies to improve perinatal care and address inequities.

Background The World Health Organization recommends mothers and infants be in direct skin-to-skin contact immediately after birth and initiate breastfeeding as soon as possible. Little is known in women with schizophrenia. Methods We conducted a population-based cohort study using administrative health data from Ontario, Canada (2012–2014), comparing women with (n = 471) and without schizophrenia (n = 218 435), and their infants, on the primary outcomes of any skin-to-skin contact and opportunity to initiate breastfeeding within the first 2 h after birth. For dyads with available data, secondary outcomes of intention to breastfeed, breastfeeding support, any breastmilk, and exclusive breastmilk at discharge were assessed. Modified Poisson regression was used to generate relative risks (aRR) and 95% confidence intervals (CI), adjusted for maternal age, parity, neighbourhood income, region of residence, smoking in pregnancy, and maternal medical and non-psychotic psychiatric comorbidity for all outcomes. Results Maternal schizophrenia was associated with lower likelihood of skin-to-skin contact (65.2% vs 78.1%; aRR 0.88, 95% CI: 0.82–0.94), and breastfeeding initiation post-delivery (38.9% vs 52.6% aRR 0.80, CI: 0.71–0.90) compared to dyads unexposed to maternal schizophrenia. Secondary outcomes followed a similar pattern. The magnitude of the effect was slightly less when restricting the cohort to full-term, vaginal deliveries, not admitted to NICU, and infant not discharged to social services. Conclusions Reduced maternal-infant skin-to-skin contact and breastfeeding initiation immediately after birth may significantly impact maternal–child bonding and the establishment breastfeeding in this population. Mothers with schizophrenia may require individualized support to promote these WHO recommended hospital practices in the early post-natal period.

Aims Social determinants of health have the potential to influence mental health and addictions-related emergency department (ED) visits and the likelihood of admission to hospital. We aimed to determine how social determinants of health, individually and in combination, relate to the likelihood of hospital admission at the time of postpartum psychiatric ED visits. Methods Among 10 702 postpartum individuals (female based on health card) presenting to the ED for a psychiatric reason in Ontario, Canada (2008–2017), we evaluated the relation between six social determinants of health (age, neighbourhood quintile [Q, Q1 = lowest, Q5 = highest], rurality, immigrant category, Chinese or South Asian ethnicity and neighbourhood ethnic diversity) and the likelihood of hospital admission from the ED. Poisson regression models generated relative risks (RR, 95% CI) of admission for each social determinant, crude and adjusted for clinical severity (diagnosis and acuity) and other potential confounders. Generalised estimating equations were used to explore additive interaction to understand whether the likelihood of admission depended on intersections of social determinants of health. Results In total, 16.0% (n = 1715) were admitted to hospital from the ED. Being young (age 19 or less v. 40 or more: RR 0.60, 95% CI 0.45–0.82), rural-dwelling (v. urban-dwelling: RR 0.75, 95% CI 0.62–0.91) and low-income (Q1 v. Q5: RR 0.81, 95% CI 0.66–0.98) were each associated with a lower likelihood of admission. Being an immigrant (non-refugee immigrant v. Canadian-born/long-term resident: RR 1.29, 95% CI 1.06–1.56), of Chinese ethnicity (v. non-Chinese/South Asian ethnicity: RR 1.88, 95% CI 1.42–2.49); and living in the most v. least ethnically diverse neighbourhoods (RR 1.24, 95% CI 1.01–1.53) were associated with a higher likelihood of admission. Only Chinese ethnicity remained significant in the fully-adjusted model (aRR 1.49, 95% CI 1.24–1.80). Additive interactions were non-significant. Conclusions For the most part, whether a postpartum ED visit resulted in admission from the ED depended primarily on the clinical severity of presentation, not on individual or intersecting social determinants of health. Being of Chinese ethnicity did increase the likelihood of admission independent of clinical severity and other measured factors; the reasons for this warrant further exploration.

OBJECTIVE We aimed to compare the risk for injury overall and by intent (accidental injury, self-injury, and assault) among children born to women with versus without schizophrenia. METHODS Using health administrative data from Ontario, Canada, children born from 2003 to 2017 to mothers with (n = 3769) and without (n = 1,830,054) schizophrenia diagnosed prior to their birth were compared on their risk for child injury, captured via emergency department, hospitalization, and vital statistics databases up to age 15 years. Cox proportional hazard models generated hazard ratios for time to first injury event (overall and by intent), adjusted for potential confounders (aHR). We stratified by child sex and age at follow-up: 0-1 (infancy), 2-5 (pre-school), 6-9 (primary school), and 10-15 (early adolescence) planning to collapse age categories as needed to obtain stable and reportable estimates. RESULTS Maternal schizophrenia was associated with elevated risk for child injury overall (105.4 vs. 89.4/1000 person-years (py), aHR 1.08, 95% CI 1.03-1.14), accidental injury (104.7 vs. 88.1/1000py, 1.08, 1.03-1.14), for self-injury (0.4 vs. 0.2/1000py, 2.14 1.18-3.85), and assault (1.0 vs. 0.3/1000py, 2.29, 1.45-3.62). By child sex, point estimates were of similar magnitude and direction, though not all remained statistically significant. For accidental injury and self-injury, the risk associated with maternal schizophrenia was most elevated in 10-15-year-olds. For assault, the risk associated with maternal schizophrenia was most elevated among children in the 0-1 and 2-5-year-old age groups. CONCLUSION The elevated risk of child injury associated with maternal schizophrenia, especially for self-injury and assault, suggests that targeted monitoring and preventive interventions are warranted.

Follow-up after psychiatric emergency department (ED) contact is key to optimizing outcomes for vulnerable patients. We aimed to quantify the likelihood of receiving outpatient mental health care after psychiatric ED visits in a population-level sample.Among individuals who presented for a psychiatric ED visit in Ontario, Canada (2010-2012) and were not admitted to hospital (N=143,662), the authors estimated the likelihood of outpatient physician mental health care within 14 days post-ED visit and compared this across presenting diagnoses.About 40.2% (N=57,797) had a follow-up mental health visit within 14 days post-ED. Follow-up was lower among individuals presenting with substance use disorders (25.2%) than among those presenting with disorders not primarily related to substance use (44.5%) (χPost-ED outpatient mental health follow-up is low. Systemwide coordination is needed to connect these high-acuity patients with care, especially those with presentations related to substance use.

Women with schizophrenia experience low rates of sexual satisfaction and high rates of sexual dysfunction. They are at high risk for adverse sexual health outcomes including unplanned pregnancies, induced abortions, and human immunodeficiency virus (HIV), and face higher rates of sexual violence and various forms of intimate partner violence. This review explores the complex and intersecting biopsychosocial risk factors that explain these outcomes among women with schizophrenia, including factors related to the illness itself, antipsychotic medications, medical and psychiatric comorbidities, stigma, childhood trauma, and social determinants of health including poverty and housing instability. Sexual health interventions designed to help women with schizophrenia achieve pleasurable and safe sexual experiences, free of coercion, discrimination and violence are few and far between, suggesting opportunities for future development in this area.

Diabetes is common among individuals with chronic psychotic illness, yet they receive lower quality of diabetes care than those without psychosis. Men usually receive higher quality diabetes care than women, but whether this holds true in chronic psychotic illness populations is unknown. We aimed to determine whether quality of diabetes care differs between men and women with chronic psychotic illness.This population-based cohort study used Ontario health administrative data to compare women and men with comorbid chronic psychotic illness and diabetes mellitus (2011-2013). The primary outcome was adherence to diabetes monitoring guidelines, defined as ≥1 retinal exam, ≥4 hemoglobin A1c (HbA1c) tests, and ≥1 dyslipidemia test during a 2-year period. Logistic regression models compared women to men to generate adjusted odds ratios (aOR) and confidence intervals (95% CI), adjusting for potential confounding variables.Women with chronic psychotic illness (n = 13,972) were slightly more likely to receive guideline-adherent diabetes monitoring than men (n = 12,287) (25.2% vs. 23.0%; aOR 1.20, 95% CI 1.10-1.30), including a greater likelihood of receiving ≥1 retinal exam (aOR 1.13, 95% CI 1.08-1.19) and ≥4 HbA1c tests (aOR 1.06, 95% CI 1.01-1.12). There was no difference in receipt of ≥1 dyslipidemia test (aOR 1.04, 95% CI 0.99-1.11).Quality of diabetes monitoring is similarly poor in women and men with chronic psychotic illness, with women receiving only marginally more optimal monitoring than men. This differs from patterns in the general population, and could have implications when designing and implementing interventions to improve diabetes care in women and men with chronic psychotic illness.

BackgroundChronic medical conditions (CMCs) and poverty commonly co-occur and, while both have been shown to independently increase the risk of perinatal mental illness, their collective impact has not been examined.MethodsThis population-based study included 853 433 Ontario (Canada) women with a singleton live birth and no recent mental healthcare. CMCs were identified using validated algorithms and disease registries, and poverty was ascertained using neighbourhood income quintile. Perinatal mental illness was defined as a healthcare encounter for a mental health or substance use disorder in pregnancy or the first year postpartum. Modified Poisson regression was used to test the independent impacts of CMC and poverty on perinatal mental illness risk, adjusted for covariates, and additive interaction between the two exposures was assessed using the relative excess risk due to interaction (RERI) and synergy index (SI).ResultsCMC and poverty were each independently associated with increased risk of perinatal mental illness (CMC vs no CMC exposure: 19.8% vs 15.6%, adjusted relative risk (aRR) 1.21, 95% CI (CI) 1.20 to 1.23; poverty vs no poverty exposure: 16.7% vs 15.5%, aRR 1.06, 95% CI 1.05 to 1.07). However, measures of additive interaction for the collective impact of both exposures on perinatal mental illness risk were not statistically significant (RERI 0.02, 95% CI −0.01 to 0.06; SI 1.09, 95% CI 0.95 to 1.24).ConclusionCMC and poverty are independent risk factors for perinatal mental illness and should be assessed as part of a comprehensive management programme that includes prevention strategies and effective screening and treatment pathways.

Maternal schizophrenia is associated with adverse birth outcomes, but the reasons for this remain unclear. In a population-based cohort of infants born to women with schizophrenia, we determined the occurrence of key perinatal outcomes and explored whether factors identifiable in our datasets explained any elevated risk. Using population-level health administrative data linked to clinical birth-registry data in Ontario, Canada (2006–2011), we examined the relative risk (RR) of preterm birth (

Aim Women with schizophrenia are vulnerable to adverse reproductive health outcomes. Short inter-pregnancy interval, or rapid repeat pregnancy, is associated with maternal and infant complications, and may be preventable. Whether women with schizophrenia are at disproportionate risk for rapid repeat pregnancy is unknown. Methods This population-based cohort study in Ontario, Canada (2002−2013) compared women with and without schizophrenia on their risk of rapid repeat pregnancy, defined as pregnancy within 12 months of an index live birth. Among women with public drug coverage, those with and without schizophrenia were compared on their use of non-barrier contraception (hormonal and surgical) post-delivery. Results Women with schizophrenia (n = 1565) were at higher risk for rapid repeat pregnancy than women without schizophrenia (n = 924,657) (6.3% vs. 3.9%, adjusted relative risk, aRR 1.31, 95% confidence interval, CI, 1.07–1.59). They had more rapid repeat pregnancies resulting in live births (aRR 1.85, 95% CI 1.26–2.72), but not pregnancy losses (aRR 1.50, 95% CI 0.99–2.29) or induced abortions (aRR 1.07, 95% CI 0.81–1.42). Post-delivery non-barrier contraception use was similar between groups (43.7% vs. 43.6%, aRR 1.06, 95% CI 0.93–1.20), although women with schizophrenia were more likely to use injectable contraception (14.1% vs. 10.1%, aRR 1.67, 95% CI 1.35–2.07). Discussion Women with schizophrenia are at higher risk than their peers for rapid repeat pregnancy, but use non-barrier contraception at similar rates. The postnatal period is an opportune time to initiate targeted interventions designed to optimize planning for any future pregnancies, and contribute to improving maternal and child health in this vulnerable group.

Psychiatric readmission is a common negative outcome. Predictors of readmission may differ by sex. This study aimed to derive and internally validate sex-specific models to predict 30-day psychiatric readmission. We used population-level health administrative data to identify predictors of 30-day psychiatric readmission among women (n = 33,353) and men (n = 32,436) discharged from all psychiatric units in Ontario, Canada (2008–2011). Predictor variables included sociodemographics, health service utilization, and clinical characteristics. Using derivation data sets, multivariable logistic regression models were fit to determine optimal predictive models for each sex separately. Results were presented as adjusted odds ratios (aORs) and 95% confidence intervals (CI). The multivariable models were then applied in the internal validation data sets. The 30-day readmission rates were 9.3% (women) and 9.1% (men). Many predictors were consistent between women and men. For women only, personality disorder (aOR 1.21, 95% CI 1.03–1.42) and positive symptom score (aOR 1.41, 95% CI 1.09–1.82 for score of 1 vs. 0; aOR 1.44, 95% CI 1.26–1.64 for ≥ 2 vs. 0) increased odds of readmission. For men only, self-care problems at admission (aOR 1.20, 95% CI 1.06–1.36) and discharge (aOR 1.44, 95% CI 1.26–1.64 for score of 1 vs. 0; aOR 1.79, 95% CI 1.17–2.74 for 2 vs. 0), and mild anxiety rating (score of 1 vs. 0: aOR 1.30, 95% CI 1.02–1.64, derivation model only) increased odds of readmission. Models had moderate discriminative ability in derivation and internal validation samples for both sexes (c-statistics 0.64–0.65). Certain key predictors of psychiatric readmission differ by sex. This knowledge may help to reduce psychiatric hospital readmission rates by focusing interventions.

Objective To determine the prevalence rates of hepatitis C in patients with schizophrenia and schizoaffective disorder being treated with clozapine. Methods Clozapine-treated outpatients and inpatients were recruited from the Centre for Addiction and Mental Health Schizophrenia Program in Toronto, Canada. All subjects had liver function tests, and positive HCV status was defined as a positive qualitative HCV RNA assay. Subjects completed a self-report questionnaire assessing HCV risk factors, past history of liver disease, previous diagnosis of human immunodeficiency virus (HIV), past hepatitis B virus (HBV) infection and current alcohol use. Results 110 subjects participated in the study and the HCV prevalence rate (antibody and viremia-positive) was 2.7%, compared to a 0.8% prevalence rate in Canada. All study subjects had established housing, none reported a history of HIV, and only one patient had a history of HBV infection. A total of 9% drank two or more drinks on a typical day drinking and 7% endorsed having six or more drinks on one occasion at least monthly. Two of 3 HCV-viremia positive subjects had HCV risk factors, specifically intravenous drug use and intranasal cocaine use. There was no difference between HCV infected and HCV negative subjects on liver function tests. Conclusions Our study demonstrates elevated rates of HCV in clozapine-treated patients compared to the general population in Canada and are congruent with reports from United States centres. Our study highlights the importance of homelessness and patterns of high-risk behaviour when interpreting HCV prevalence rates in this sub-population of patients and should be explored in future studies.