Abstract:Objective To perform a meta-analysis of the effects of passive smoking on risk of hypertension among non-smoking adults. Methods PubMed, Web of science, Embase, Wanfang database, CNKI and VIP database were systematically searched for observational studies on the association between passive smoking and risk of hypertension among non-smoking adults. Retrieval time for literatures was from the establishment of each database to October 2021. Stata 12.0 software was used to calculate combined odds ratio (OR) and the 95% confidence interval (CI). Dose-response analysis was conducted to quantify the correlation between duration of passive smoking exposure and risk of hypertension. Results A total of 10 studies were included in this meta-analysis, involving 5,016,557 participants. The combined analysis results showed that passive smoking could increase risk of hypertension among non-smoking adults (OR=1.21, 95%CI:1.08-1.35). Dose-response analysis revealed that an increase of 1 h/d passive smoking exposure was associated with an increase in risk of hypertension (OR=1.09, 95%CI:1.01-1.18). Conclusion Passive smoking is a significant risk factor of hypertension among non-smoking adults.
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