An exploration of the associations between immigration status, racialized status and depressive symptoms: An epidemiological study guided by Intersectionality Theory

dc.contributor.authorBlaskevitch, Manisha
dc.contributor.departmentPublic Health Sciences
dc.contributor.supervisorDavison, Colleen
dc.contributor.supervisorMcIsaac, Michael's University at Kingstonen
dc.description.abstractBackground: Disparities in adolescents' mental health in Canada stem from many environmental, genetic and social factors. Intersectionality Theory explains how people exist at the intersection of a combination of social identities including a person’s racial group, immigrant status, socioeconomic status (SES), and gender. Depressive symptoms can vary across such social identity factors, prompting exploration of their synergistic effects. This study delves into how the intersection of immigrant identity and race influences depressive symptom risk among Canadian adolescents. Objectives: 1) Describe the prevalence and risk profiles of depressive symptoms across various social identity factors. 2) Explore if the joint effect of immigration and race on depressive symptoms exceeds the risk of the sum of the two main effects produced by these variables independently. Methods: Data from the 2017/2018 Health Behaviour in School-aged Children survey involving Canadian grades 6-10 were used (n=20,108). Objective 1 assessed depressive symptom patterns for various social identity factors using proportions and estimates of relative risk. Objective 2 employed adjusted log-binomial regression to measure the interaction between immigration and race; relative risk estimates, relative excess risk due to interaction, synergy index, and attributable proportion were also obtained. Results: The interaction of race and immigration yields a unique protection. Racialized immigrant youth exhibit significantly lower depressive symptom risk (RR=0.81, 95% CI 0.73, 0.98) than non-immigrant, non-racialized peers. Among the racialized subgroup, immigration associates with substantial risk reduction of depressive symptoms (RR=0.64, 95% CI 0.50, 0.77). Among immigrant youth, racialized individuals show a non-significant risk difference when compared to their non-racialized counterparts (RR=0.76, 95% CI 0.10, 1.42). The interaction between racialized and immigrant identity produced a significant risk reduction of depressive symptoms beyond additivity. The relative excess risk due to interaction (RERI) was -0.52 (95% CI -0.73, -0.30). Conclusions: The findings highlight a protective synergy of these two factors, indicating substantial risk reduction beyond the individual influences. These insights emphasize the need for further exploration of synergistic effects and the use of Intersectionality Theory when assessing health risks for youth. Tailored interventions and support strategies, which consider the intersectionality of multiple social identities to enhance adolescent mental well-being, are indicated.
dc.relation.ispartofseriesCanadian thesesen
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dc.subjectimmigration status
dc.subjectracialized status
dc.subjectdepressive symptoms
dc.subjectintersectionality theory
dc.subjectexcess risk
dc.subjecthealth behaviour in school-aged children
dc.titleAn exploration of the associations between immigration status, racialized status and depressive symptoms: An epidemiological study guided by Intersectionality Theory
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