| Summary: | Background
China took great efforts to protect people
from secondhand smoke (SHS), including health education, smoke-free environment
creating and smoke-free law promotion. Now, more and more people support
smoke-free in public places. This study aims to assess secondhand smoke (SHS)
exposure at home and to examine factors associated with it in China.
Methods
A cross-sectional study was conducted among
Chinese aged 15 years and above. Using a multistage complex survey design, 336
counties/districts (PSUs) were selected nationwide. In total, 15,095
individuals completed the survey and the response rate was 92.2%. Data were weighted and analyzed by SPSS 20.0 complex survey data
analysis program, and Logistic regression was used for exploring potential
factors associated with SHS exposure at home.
Results
The proportion of nonsmokers exposed to SHS
at home was 46.7% (37.4% for male and 51.4% for female). Among female
respondents, 41.9% reported being exposed to SHS every day in the last 30 days.
SHS exposure rate was highest among primary (50.8%) and middle school (53.4%),
followed by high school (46.8%), college and above was the lowest (30.2%). The rate
also decreased as respondents' age goes up, nonsmokers in the age group 15-24,
25-44, 45-64, 65 years old and above had 55.8%, 45.5%, 44.0% and 38.8% SHS
exposure rate respectively. Moreover, the rate is higher in rural area (57.5%) than
in urban area (36.9%). Nonsmoker exposed to SHS at workplace had higher SHS
exposure rate at home than those who did not exposed at workplace. (OR=1.40, 95%CI:
1.10 -1.79).
Conclusions
SHS
exposure at home is a serious public health problem, especially for women. Lower
education, younger people, and those in rural area are more likely to be exposed
to SHS at home. 100% smoke-free policy in workplaces might be helpful to reduce
SHS exposure in home.
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