Abstract
Background: Results on the environmental influence on unassisted quitting are scarce. We investigated the associations of living with smoker(s) with quitting in Chinese adult smokers. Methods: We examined both cross-sectional and prospective data in the Hong Kong Population Health Survey recruited participants in 2003/04, and followed up to 2006. Unconditional logistic regression yielded adjusted odds ratios (AORs) of (i) planning to quit, (ii) ex-smoking (cross-sectional), and quitting (prospective) for living with smoker(s). 1679 ever smokers aged 18+ years at baseline, and 323 of them who were successfully followed-up were included in the cross-sectional, and prospective analysis. Results: At baseline, living with smoker(s) was significantly associated with lower odds of planning to quit in current smokers (AOR 0.41, 95% CI 0.25–0.68), and lower odds of ex-smoking (AOR 0.45, 95% CI 0.34–0.58), particularly if the smoker(s) smoked inside home (AOR 0.35, 95% CI 0.26–0.47). Prospectively, living with smoker(s) non-significantly predicted lower odds of new quitting (AOR 0.48, 95% CI 0.13–1.78). Conclusions: Our study has provided the first evidence in a Chinese general population that living with smoker(s) is an important barrier against smoking cessation. To boost quit rate in nonusers of smoking cessation services, smoking at home should be banned, especially for populations living in crowed urban environments that are typical of economically developed cities in China.
Highlights
Tobacco smoking causes 6 million deaths each year in the world, which will continue to rise unless there is widespread cessation [1]
To boost quit rate in nonusers of smoking cessation services, smoking at home should be banned, especially for populations living in crowed urban environments that are typical of economically developed cities in China
We investigated the cross-sectional and prospective associations of Secondhand smoke (SHS) exposure and quitting in Chinese adult smokers in a real life general population setting in Hong Kong, where smoking cessation services were scarce during 2003/04 to 2006
Summary
Tobacco smoking causes 6 million deaths each year in the world, which will continue to rise unless there is widespread cessation [1]. In China, where one-third of the world’s cigarettes are consumed, less than one-third of current smokers had an intention to quit [2]. In Hong Kong, the most developed and Westernized city of China, where the smoking prevalence is amongst the lowest in the world (daily smoking 10.5% in 2015) and tobacco epidemic reached its peak about 20 years earlier than in the Mainland [3], only 37% of daily smokers had an intention to quit, but most failed to quit [4]. Successful quitting is associated with many factors. Having an intention to quit is a prerequisite for preparing and taking action of smoking cessation, and it is strongly associated with successful quitting [5,6]. We investigated the associations of living with smoker(s) with quitting in Chinese adult smokers
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