||Sample design The sampling design consists of two major components: an overall sampling scheme and an on-site sampling scheme based on mapping. The overall sample scheme employs a stratified three-stage probability proportion to size (PPS) random sample design.
Sample size The 2011 CHFS collected information from 8,438 households consisting of 29,463 individuals. The weighted average household size was 2.94. The 2013 CHFS collected information from more than 28,000 households. In
April-September, 2015, the Center sent over 2500 SWUFE students to interview
40,000 effective household samples in 1439 communities of 363 counties in 29
CHFS Quality Control in Data Collection-English
CHFS Quality Control in Data Collection-Chinese
||CAPI (computer-assisted personal interview) every two years
CATI (computer-assisted telephone interview) quarterly
||CHFS calculate the refusal ways in two ways. By refusal rateⅡ,the overall refusal rate is 11.6%, where urban refusal rate is 16.5% and rural refusal rate is 3.2%. The detailed page gives an illustration of the distribution of the refusal rate by two ways.