Healthy Immigrant Effect or Under-Detection? Examining Undiagnosed and Unrecognized Late-Life Depression for Racialized Immigrants and Nonimmigrants in Canada

Shen (Lamson) Lin and Jessica Kelley

The Journals of Gerontology: Series B, 2024, vol. 79, issue 3, 2060-2068

Abstract: ObjectivesImmigrants to Canada tend to have a lower incidence of diagnosed depression than nonimmigrants. One theory suggests that this “healthy immigrant effect (HIE)” is due to positive selection. Another school of thought argues that the medical underuse of immigrants may be the underlying reason. This unclear “immigrant paradox” is further confounded by the intersecting race–migration nexus.MethodsThis population-based study analyzed data of participants (n = 28,951, age ≥45) from the Canadian Community Health Survey (2015–2018). Multivariable logistic regression was employed to examine associations between race–migration nexus and mental health outcomes, including depressive symptoms (Patient Health Questionnaire [PHQ-9] score ≥10).ResultsCompared to Canadian-born (CB) Whites, immigrants, regardless of race, were less likely to receive a mood/anxiety disorder diagnosis (M/A-Dx) by health providers in their lifetime. Racialized immigrants were mentally disadvantaged with increased odds of undiagnosed depression (Adjusted odds ratio [AOR] = 1.76, 99% Confidence interval [CI]:1.30–2.37), whereas White immigrants were mentally healthier with decreased odds of PHQ depression (AOR=0.75, 99%CI: 0.58, 0.96) and poor self-rated mental health (AOR=0.56, 99% CI=0.33, 0.95). Among the subpopulation without a previous M/A-Dx (N = 25,203), racialized immigrants had increased odds of PHQ depression (AOR = 1.45, 99% CI: 1.15–1.82) and unrecognized depression (AOR = 1.47, 99% CI: 1.08–2.00) than CB Whites. Other risk factors for undiagnosed depression include the lack of regular care providers, emergency room as the usual source of care, and being home renters.DiscussionDespite Canadian universal health coverage, the burden of undiagnosed depression disproportionately affects racialized (but not White) immigrants in mid to late life. Contingent on race–migration nexus, the HIE in mental health may be mainly driven by the healthier profile of White immigrants and partly attributable to the under-detection (by health professionals) and under-recognition of mental health conditions among racialized immigrants. A paradigm shift is needed to estimate late-life depression for medically underserved populations.

Keywords: Depression care; Mental health equity; Migration; Minority aging; Race (search for similar items in EconPapers)
Date: 2024
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The Journals of Gerontology: Series B is currently edited by Psychological Sciences - S. Duke Han, PhD and Social Sciences - Jessica A Kelley, PhD, FGSA

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