[Application of capture-mark-recapture method on evaluating the abilities of birth defects surveillance systems].

Objective: To evaluate the abilities of population-based birth defects surveillance system (PBBDSS) and hospital-based birth defects surveillance system(HBBDSS).

Methods: We used capture-mark-recapture method(CMR) to analyze the data of the two kinds of birth defects surveillance systems from 1 Oct. 2006 to 31 Dec.