深圳市布吉镇户籍人口出生性别比调查研究

Research on Birth Sex Ratio of Resident Population in Buji Town of ShenZhen

目的：了解深圳市布吉镇1985～2004年常住人口出生性别的动态变化和可能影响因素。方法：利用布吉镇3家公立医院住院的分娩新生儿性别资料，分析该地20年间出生性比例的动态趋势与相关特征。结果：该区域20年的平均出生性别比为115．73：100；大多数年份的性别比例高于联合国规定107：100的警戒线，近10年有向上波动的趋势；性别比与妊娠次数、生育孩次和产妇年龄都有一定的关系。结论：该区域户籍人口出生性别比偏高，而且与生育观念 医疗技术和生育政策有关系。

Objective： To find out the trends of birth sex from 1985 to 2004 and its influencing factors in Buji town of Shenzhen city. Methods ： The trends of birth sex ratio and related characteristics during 20 years were analyzed according to data of the newborn babies from three hospital in Buji town. Results： The average ratio of birth sex was 115.73：100 during 20 years in this area. In most of years the birth sex ratio was higher than that （107：100） regulated by U.N. and there were upward trends in latter ten years. The birth sex ratio was related to the pregnancy times and childbirth times and the women＇s age. Conclusion ： The birth sex ratio is a bit higher in this area as it is related to views of family planning, medical technology and some policies.