法学 >>> 政治学 法学 社会学 人口学 民族学 劳动科学 北京人口
搜索结果: 1-4 共查到法学 Contraceptive Failure相关记录4条 . 查询时间(0.063 秒)
Context: While differences in levels of contraceptive use across socioeconomic subgroups of women have narrowed greatly over time, large disparities remain in rates of unintended pregnancy. One reason...
Context: Half of all pregnancies in the United States are unintended. Of these, half occur to women who were practicing contraception in the month they conceived, and others occur when couples stop us...
Context: Unintended pregnancy remains a major public health concern in the United States. Information on pregnancy rates among contraceptive users is needed to guide medical professionals' recommendat...
This study examines the determinants of contraceptive failure and its consequences. It identifies various difference in the occurrence of contraceptive failure and the ways such pregnancies are resolv...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...