Real-world unassisted quit success and related contextual factors: a population-based study of Chinese male smokers

To examine the association of exposure to secondhand smoke (SHS) and tobacco advertising with unassisted smoking cessation among Chinese male smokers.A questionnaire was administered to 6500 male adult smokers from six cities in China selected in a cross-sectional multistage sampling design. The survey collected self-reported demographic characteristics, smoking and cessation status, SHS exposure and tobacco advertising exposure, with 5782 valid...