Objective To understand current status of secondhand smoke exposure on campus in Shanghai, explore its influencing factors, and provide reference for further efforts to tobacco control on campus.
Methods A total of 4 593 non-smoking students from 19 higher education institutions in Shanghai were selected by stratified multi-stage cluster sampling with probability proportional to sizes of selected institutions and academic programs. A selfadministered questionnaire survey was conducted to understand their secondhand smoke exposure and its influencing factors. Statistical analyses included chi-square test, ttest, and multiple logistic regression analysis.
Results The overall prevalence rate of secondhand smoke exposure was 63.5% of the college students in Shanghai. Specifically, the prevalence rate of junior college students was higher than that of university students (74.2% vs 60.9%, P < 0.05); the prevalence rate of male students was higher than that of female students (72.9% vs 57.1%, P < 0.05); the prevalence rate was higher among senior students than freshmen (69.4% vs 58.8%, P < 0.05). According to the results of multiple logistic regression analysis, junior college, male, cigarettes on sale on campus, tobacco advertising/marketing/sponsorship on campus, smoking teachers, and smoking classmates were risk factors of secondhand smoke exposure on campus (P < 0.05). In contrast, smoking ban on campus and participating in tobacco control activities at college were protective factors (P < 0.05).
Conclusion Secondhand smoke exposure is serious among college students in Shanghai. Therefore, it is urgent to introduce a comprehensive smoking ban on campus and create smoke-free campuses.
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