Secondhand smoke remains serious problem, survey finds

The number of people exposed to secondhand smoke remains high across cities in China, with over 40 percent of people in workplaces nationwide still exposed, according to a survey released on Wednesday.

The China City Adult Tobacco Survey - released by the Chinese Center for Disease Control and Prevention and the World Health Organization - polled residents age 15 and above in 14 cities in 2013 and last year.

The survey asked a series of questions about tobacco use and respondents' awareness of, and attitudes toward, local tobacco control policies. Conclusions were based on the 31,515 completed survey forms.