Prevalence of Orofacial Clefts among Live Births in China: A Systematic Review and Meta‐Analysis

Orofacial clefts (OFCs) are common human birth defects in China. However, studies on the prevalence of OFCs present inconsistent results. The overall prevalence and geographic distribution of OFCs are poorly described in China. Thus, we conducted a systematic review and meta-analysis to estimate the prevalence of OFCs.The systematic review and meta-analysis were conducted on the basis of an established protocol (PROSPERO 2015: CRD42015030198)....