Data Resource Profile: China Chronic Disease and Risk Factor Surveillance (CCDRFS)

Data resource basicsReliable and timely information on chronic and non-communicable diseases (NCDs) and their risk factors are fundamental for informing the development, implementation and evaluation of NCDs-related health policy.The China Chronic Disease and Risk Factor Surveillance (CCDRFS) is series of ongoing periodical nationally representative crosssectional surveys among Chinese adults on their chronic health conditions (e.g.hypertension, diabetes, dyslipidaemia, stroke, myocardial infarction, cancer and chronic obstructive pulmonary disease) and related risk factors (e.g.smoking, harmful drinking, physical inactivity and unbalanced diet).The CCDRFS is established and organized by the National Centre for Chronic and Noncommunicable Disease Control and Prevention (NCNCD), the Chinese Centre for Disease Control and Prevention (China CDC), incorporated into the national Disease Surveillance Points (DSPs) system.A DSP area covers one rural county or one urban district.The details of the DSPs system have been reported elsewhere. 1,2Since its establishment in 2004, the CCDRFS was incorporated into the DSPs system, using its surveillance point as the primary sampling unit (PSU) in a multistage sampling framework.At the time of writing this paper, six field surveys had been carried out in 2004 (79 DSPs), 2007 (161 DSPs), 2010 (161 DSPs), 2013 (298 DSPs), 2015 (298 DSPs) and 2018 (298 DSPs).Figure 1 shows the locations of the CCDRFS surveillance points before and after expansion.