Abstract：Objective To analyze trends of sex ratio at birth and to identify factors with sex ratio.Methods Sex ratio at birth from 31 provinces, municipalities, and autonomous regions were obtained from national census reports. Trends of sex ratio were analyzed and factors associated with sex ratio were identified.Results We found that the peak of sex ratio at birth was in 1990, with differences among provinces and ethic groups. Hai Nan (137.10) and Guangdong (131.26) had the highest ratio. On the other hand, sex ratio in Tibet and Xinjiang were at the normal range, but very high ratio was observed in second birth in these regions. The high sex ratio was closely related to geographical location.Conclusion More attention should be paid to those regions with very high sex ratio.
李智, 张山山, 倪俊学, 全星, 刘锦桃. 1953—2010年中国出生人口性别比变化趋势及地理分布[J]. 中国生育健康杂志, 2016, 27(1): 13-18.
LI Zhi, ZHANG Shanshan, NI Junxue, QUAN Xin, LIU Jintao. Yunnan Provincial Maternal and Child Health Hospital, Kunming 650051, China. Trends and geographical distribution of sex ratio at birth in China, 1953-2010. Chinese Journal of Reproductive Health, 2016, 27(1): 13-18.
