Abstract:
BACKGROUND:Epidemiological studies have consistently linked smoking to poor mental health. Among non-smokers, some studies have also reported associations between secondhand smoke exposure and psychological symptoms. However, an association between secondhand smoke exposure and depressive disorders has not been well established. METHODS:This analysis used cross-sectional data from a series of 10 population surveys conducted in Canada between 2003 and 2013. The surveys targeted the Canadian household population, included a brief structured interview for past year major depressive episode (MDE) and included items assessing secondhand smoke exposure. We used two-stage individual-level random-effects meta-regression to synthesize results from these surveys. RESULTS:Over the study interval, about 20% of non-smokers reported substantial exposure to secondhand smoke. In this group, the pooled annual prevalence of MDE was 6.1% (95% CI 5.3-6.9) compared to 4.0% (95% CI 3.7-4.3) in non-smokers without secondhand smoke exposure. The crude odds ratio was 1.5 (95% CI 1.4-1.7). With adjustment for a set of potential confounding variables the odds ratio was unchanged, 1.4 (95% CI 1.2 - 1.6). CONCLUSIONS:These results provide additional support for public health measures aimed at reducing secondhand smoke exposure. A causal connection between secondhand smoke exposure and MDEs cannot be confirmed due to the cross-sectional nature of the data. Longitudinal studies are needed to establish temporal sequencing.
journal_name
J Affect Disordjournal_title
Journal of affective disordersauthors
Patten SB,Williams JVA,Lavorato DH,Woolf B,Wang JL,Bulloch AGM,Sajobi Tdoi
10.1016/j.jad.2017.08.006subject
Has Abstractpub_date
2018-01-01 00:00:00pages
260-264eissn
0165-0327issn
1573-2517pii
S0165-0327(17)30055-1journal_volume
225pub_type
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