Dataset Information

Postpartum self-inflicted injury, suicide, assault and homicide in relation to immigrant status in Ontario: a retrospective population-based cohort study.

ABSTRACT:

Background

Intentional injury, including suicide and assault, is a leading cause of maternal morbidity and mortality. We aimed to determine whether immigrant and nonimmigrant women differ in their 1-year risk of intentional injury after birth.

Methods

This population-based retrospective cohort study used administrative data from Ontario from 2002 to 2012. Risk of self-inflicted injury (self-harm or suicide), and injury inflicted by others (assault or homicide), were each analyzed within 1 year after delivery of a live-born infant for immigrant and nonimmigrant mothers. Relative risks (RRs) were adjusted for maternal age, parity, income, resource utilization and psychiatric history.

Results

The study included 327 279 immigrant and 942 502 nonimmigrant mothers. Risk of self-inflicted injury was similar among immigrants and nonimmigrants (adjusted RR 0.91, 95% confidence interval [CI] 0.78-1.04), with no variation by duration of residence or refugee status. Immigrants were at lower risk than nonimmigrants for injury inflicted by others (adjusted RR 0.57, 95% CI 0.51-0.64); that risk was higher among refugees than among nonrefugee immigrants (adjusted RR 1.79, 95% CI 1.33-2.41), and it was higher among long-term (adjusted RR 2.27, 95% CI 1.76-2.91) and medium-term (adjusted RR 1.58, 95% CI 1.19-2.11) immigrants than among recent immigrants. Variability by country of origin was observed for both injury types.

Interpretation

Immigrant mothers have a reported risk for self-inflicted injury after birth similar to that of their Canadian-born counterparts. The extent to which selective underreporting of intentional injury in immigrant women might explain our findings is a key consideration for future research.

SUBMITTER: Vigod SN

PROVIDER: S-EPMC6461543 | biostudies-literature | 2019 Apr-Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Postpartum self-inflicted injury, suicide, assault and homicide in relation to immigrant status in Ontario: a retrospective population-based cohort study.

Vigod Simone N SN Arora Serena S Urquia Marcelo L ML Dennis Cindy-Lee CL Fung Kinwah K Grigoriadis Sophie S Ray Joel G JG

CMAJ open 20190412 2

<h4>Background</h4>Intentional injury, including suicide and assault, is a leading cause of maternal morbidity and mortality. We aimed to determine whether immigrant and nonimmigrant women differ in their 1-year risk of intentional injury after birth.<h4>Methods</h4>This population-based retrospective cohort study used administrative data from Ontario from 2002 to 2012. Risk of self-inflicted injury (self-harm or suicide), and injury inflicted by others (assault or homicide), were each analyzed ...[more]

PMID: 30979727

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Project description:ObjectiveTo compare recent immigrants and long-term residents in Ontario, Canada, on established health service quality indicators of end-of-life cancer care.DesignRetrospective, population-based cohort study of cancer decedents between 2004 and 2015.SettingOntario, Canada.ParticipantsWe grouped 13 085 immigrants who arrived in Ontario in 1985 or later into eight major ethnic groups based on birth country, mother tongue and surname, and compared them to 229 471 long-term residents who were ≥18 years at the time of death.Primary and secondary outcome measuresAggressive care, defined as a composite of ≥2 emergency department visits, ≥2 new hospitalisations or an intensive care unit admission within 30 days of death; and supportive care, defined as a physician house call within 2 weeks, or palliative nursing or personal support worker home visit within 6 months of death. Multivariable logistic regression was used to examine the association between immigration status and the odds of each main outcome.ResultsCompared with long-term residents, immigrants overall and by ethnic group had higher rates of aggressive care (13.7% vs 17.5%, respectively; p<0.001). Among immigrants, Southeast Asians had the highest use while White-Eastern and Western Europeans had the lowest. Supportive care use was similar between long-term residents and immigrants (50.0% vs 50.5%, respectively; p=0.36), though lower among Southeast Asians (46.6%) and higher among White-Western Europeans (55.6%). After adjusting for sociodemographic characteristics and comorbidities, immigrants remained more likely than long-term residents to receive aggressive care (OR: 1.15, 95% CI 1.09 to 1.21), yet were less likely to receive supportive care (OR: 0.95, 95% CI 0.91 to 0.98).ConclusionsAmong cancer decedents in Ontario, immigrants are more likely to use aggressive healthcare services at the end of life than long-term residents, while supportive care varies by ethnicity. Contributors to variation in end-of-life care require further study.

Project description:ImportancePeople who immigrate face unique health literacy, communication, and system navigation challenges, and they may have diverse preferences that influence end-of-life care.ObjectiveTo examine end-of-life care provided to immigrants to Canada in the last 6 months of their life.Design, setting, and participantsThis population-based cohort study (April 1, 2004, to March 31, 2015) included 967 013 decedents in Ontario, Canada, using validated linkages between health and immigration databases to identify immigrant (since 1985) and long-standing resident cohorts.ExposuresAll decedents who immigrated to Canada between 1985 and 2015 were classified as recent immigrants, with subgroup analyses assessing the association of time since immigration, and region of birth, with end-of-life care.Main outcomes and measuresLocation of death and intensity of care received in the last 6 months of life. Analysis included modified Poisson regression with generalized estimating equations, adjusting for age, sex, socioeconomic position, causes of death, urban and rural residence, and preexisting comorbidities.ResultsAmong 967 013 decedents of whom 47 514 (5%) immigrated since 1985, sex, socioeconomic status, urban (vs rural) residence, and causes of death were similar, while long-standing residents were older than immigrant decedents (median [interquartile range] age, 75 [58-84] vs 80 [68-87] years). Recent immigrant decedents were overall more likely to die in intensive care (15.6% vs 10.0%; difference, 5.6%; 95% CI, 5.2%-5.9%) after adjusting for differences in age, sex, income, geography, and cause of death (relative risk, 1.30; 95% CI, 1.27-1.32). In their last 6 months of life, recent immigrant decedents experienced more intensive care admissions (24.9% vs 19.2%; difference, 5.7%; 95% CI, 5.3%-6.1%), hospital admissions (72.1% vs 68.2%; difference, 3.9%; 95% CI, 3.5%-4.3%), mechanical ventilation (21.5% vs 13.6%; difference, 7.9%; 95% CI, 7.5%-8.3%), dialysis (5.5% vs 3.4%; difference, 2.1%; 95% CI, 1.9%-2.3%), percutaneous feeding tube placement (5.5% vs 3.0%; difference, 2.5%; 95% CI, 2.3%-2.8%), and tracheostomy (2.3% vs 1.1%; difference, 1.2%; 95% CI, 1.1%-1.4%). Relative risk of dying in intensive care for recent immigrants compared with long-standing residents varied according to recent immigrant region of birth from 0.84 (95% CI, 0.74-0.95) among those born in Northern and Western Europe to 1.96 (95% CI, 1.89-2.05) among those born in South Asia.Conclusions and relevanceAmong decedents in Ontario, Canada, recent immigrants were significantly more likely to receive aggressive care and to die in an intensive care unit compared with other residents. Further research is needed to understand the mechanisms behind this association.

Project description:ObjectiveTo describe the trends in suicide and emergency department (ED) visits for self-harm in youth by immigration status and immigrant characteristics.DesignPopulation-based longitudinal cohort study from 1996 to 2012 using linked health and administrative datasets.SettingOntario, Canada.ParticipantsYouth 10 to 24?years, living in Ontario, Canada.ExposureThe main exposure was immigrant status (recent immigrant (RI) versus long-term residents (LTR)). Secondary exposures included region of birth, duration or residence, and refugee status.Main outcome measureTrends over time in suicide and ED self-harm were modelled within consecutive 3-year time periods. Rate ratios were estimated using Poisson regression models.Results2.5 to 2.9?million individuals were included per cohort period. LTR suicide rates ranged from 7.4 to 9.4/100?000 male person-years versus 2.2-3.4/100?000 females. RI's suicide rates were 2.7-7.2/100,000 male versus 1.9-2.7/100?000 female person-years. Suicide rates were lower among RI compared with LTR (adjusted relative rate (aRR)=0.70, 95% CI=0.57 to 0.85) with different mechanisms of suicide. No significant time trend in suicide rates was observed (p=0.40). ED self-harm rates for LTR and RI were highest in females (2.6-3.4/1000 LTR females versus 1.1-1.5/1000 males, 1.2-1.8/1000 RI females versus 0.4-0.6/1000 males). RI had lower rates of self-harm compared with LTR (aRR=0.60, 95%?CI=0.56 to 0.65). Stratum-specific rates showed a steeper decline per period in RI compared with LTR (RI: aRR=0.85, 95%?CI=0.81 to 0.89; LTR: aRR=0.91, 95%?CI=0.90 to 0.93). Observed trends were not universal across region of origin and by refugee status.InterpretationSuicide rates have been stable and ED self-harm rates are declining over time among RI youth. These trends by important subgroups should continue to be monitored to allow for early identification of subpopulations of immigrant youth in need of targeted and culturally appropriate public health interventions.

Project description:Importance:Immigrant populations continue to grow across Western countries. Such populations may face vulnerabilities that contribute to the risk of experiencing violent injury. Youths are at disproportionate risk compared with other age groups, and such violence may be preventable with appropriately targeted injury prevention strategies. Objective:To examine the association of immigrant or refugee status and immigration-related factors with the experience of assault. Design, Setting, and Participants:This population-based cohort study used linked health and administrative databases in Ontario, Canada, where health services are funded through a universal, single-payer health insurance plan. All youths and young adults aged 10 to 24 years (hereafter referred to as youths) residing in Ontario from January 1, 2008, to December 31, 2016, were eligible to participate. Data were analyzed from April 13, 2017, to January 6, 2020. Exposures:The main exposure was immigrant status. Secondary exposures were immigration-related factors, including visa class, time since immigration, and region and country of origin. Main Outcomes and Measures:The main outcome consisted of violent injuries requiring acute care (emergency department visit or hospitalization) or causing death. Poisson regression models were used to estimate rate ratios for injuries. Results:A total of 22 969 443 person-years were included in the analysis (51.3% male and 48.7% female participants). Compared with nonimmigrants, a greater proportion of immigrants lived in the lowest neighborhood income quintile (30.5% vs 18.2%) and urban areas (98.9% vs 87.7%). Among immigrants, 17.9% were refugees. Rates of violent injuries experienced were 549.0 (95% CI, 545.7-552.2) per 100 000 person-years in nonimmigrant youth, 225.0 (95% CI, 219.4-230.7) per 100 000 person-years in nonrefugee immigrant youth, and 525.4 (95% CI, 507.2-544.1) per 100 000 person-years in refugee immigrant youth. The rates of violent injury among nonrefugee and refugee immigrants were lower than among nonimmigrants (nonrefugee adjusted rate ratio [aRR], 0.41 [95% CI, 0.38-0.43]; refugee aRR, 0.82 [95% CI, 0.76-0.89]). Older age (oldest vs youngest aRR, 6.90 [95% CI, 6.53-7.29]), male sex (aRR, 2.60 [95% CI, 2.52-2.68]), and low neighborhood income (aRR, 2.42 [95% CI, 2.32-2.53]) were associated with violent injury risk. Rates of experiencing assault were lowest among South Asian (aRR, 0.33 [95% CI, 0.30-0.37]) and East Asian (aRR, 0.23 [95% CI, 0.19-0.26]) immigrants. Only Somali immigrants experienced higher assault rates (712.0 [95% CI, 639.3-805.3] per 100 000 person-years) compared with nonimmigrants. Most injuries (79.9%) were from being struck, followed by being cut (5.9%). Conclusions and Relevance:The low rates of assault experienced by immigrants, including refugees, compared with nonimmigrants suggests that Canadian immigrant settlement supports and cultural factors may be protective against the risk of experiencing assault.

Dataset Information

Postpartum self-inflicted injury, suicide, assault and homicide in relation to immigrant status in Ontario: a retrospective population-based cohort study.

Background

Methods

Results

Interpretation

Publications

Postpartum self-inflicted injury, suicide, assault and homicide in relation to immigrant status in Ontario: a retrospective population-based cohort study.

Similar Datasets

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