[Smoking relapse rate and influencing factors in smokers aged 15 years and above in China].

To describe the relapse status of smokers aged ≥15 years in China, and investigate the main factors influencing their relapse behavior. The data of this study cames from the 2018 China Adult Tobacco Survey, covering 400 committees or villages in 200 districts or counties in 31 provinces (autonomous regions and municipalities) of China. The relevant data of smoking and relapsing in residents aged ≥15 years were collected by face-to-face interview. Software SAS 9.4 was used to clean and analyze the data, and logistic regression model was used to analyze the influencing factors for relapse rate. A total of 19 376 questionnaires were completed, with a response rate of 91.50%. In 2018, 66.05% of smokers aged ≥15 years in China had smoking relapse, in whom 66.59% were males and 55.79% were females. In all age groups, the age group 15-24 years had the highest smoking relapse rate (82.63%). Multivariate analysis showed that the younger age 15-24 years (=4.618,95%:1.981-10.763), e-cigarette use (=9.782,95%:3.139-30.490), and tobacco advertising, promotion and sponsorship in the past 30 days (=1.710,95%:1.291-2.265) were associated with higher smoking relapse rate. Compared with people who were allowed smoking at home or those without smoking limit, the smoking relapse rate in people who were not allowed to smoke at home (=0.562, 95%: 0.439-0.719) or those with smoking limit (=0.487, 95%: 0.366-0.647) was lower. The smoking relapse rate in Chinese smokers is high, especially in young people. It is suggested to conduct targeted intervention based on the results of this study to reduce the smoking relapse rate and help achieve the smoking control goal in Healthy China 2030.