Suicide and Other-Cause Mortality after Early Exposure to Smoking and Second Hand Smoking: A 12-Year Population-Based Follow-Up Study

Vincent Chin-Hung Chen, Chian-Jue Kuo, Tsu-Nai Wang, Wen-Chung Lee, Wei J Chen, Cleusa P Ferri, Duujian Tsai, Te-Jen Lai, Meng-Chuan Huang, Robert Stewart and Ying-Chin Ko

PLOS ONE, 2015, vol. 10, issue 7, 1-12

Abstract: Background: The association between smoking and suicide is still controversial, particular for early life cigarette smoking exposure. Few studies have investigated this association in adolescents using population-based cohorts, and the relationship with second hand smoking (SHS) exposure has not been addressed. Methods and Findings: In this study, we followed a large population-based sample of younger people to investigate the association between smoking, SHS exposure and suicide mortality. Between October 1995 and June 1996, 162,682 junior high school students ages 11 to 16 years old living in a geographic catchment area in Taiwan were enrolled and then followed till December 2007 (1,948,432 person-years) through linkage to the National Death Certification System. Participants who were currently smoking at baseline had a greater than six-fold higher suicide mortality than those who did not smoke (29.5 vs. 4.8 per 100,000 person-years, p 20 cigarettes/per day. The estimated depression-adjusted odds ratio did not change substantially. The population attributable fractions for suicide associated with smoking and heavy SHS exposure (>20 cigarettes/per day) were 9.6% and 10.6%, respectively. Conclusions: This study showed evidence of excess suicide mortality among young adults exposed to active or passive early life cigarette smoking.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0130044

DOI: 10.1371/journal.pone.0130044

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