Weighted prevalence of single and multiple chronic disease BRFs in Chinese adults aged 15–69 years (2007 China Chronic Disease and Risk Factor Surveillance).

aAll prevalences were adjusted for age and sex, and were weighted to represent the total population of national disease surveillance points system.bCI: Confidence intervals taking into account the complex survey design.cUsing tobacco every day or sometimes.dConsuming 25 g pure alcohol or more per drinking day for men and 15 g or more for women.eConsuming fruit and vegetable less frequently than daily in the past 12 months.fLow level of activity according to the criteria of Global Physical Activity Questionnaire.gIndividuals who had a body mass index≥25.