搜索结果: 1-2 共查到“医学 Teenage Pregnancy”相关记录2条 . 查询时间(0.056 秒)
Differences in Teenage Pregnancy Rates Among Five Developed Countries:The Roles of Sexual Activity and Contraceptive Use
Teenage Pregnancy Rates Contraceptive Use Sexual Activity
font style='font-size:12px;'>
2009/9/16
Context: Adolescent pregnancy, birth, abortion and sexually transmitted disease (STD) rates are much higher in the United States than in most other developed countries.
Methods: Government statist...
The Effect of Partners' Characteristics on Teenage Pregnancy and Its Resolution
Teenage Pregnancy abortions teenage women
font style='font-size:12px;'>
2009/9/16
Context: Although the determinants of whether a teenage woman has a nonmarital pregnancy and how such a pregnancy is resolved have been widely investigated, little is known about the effect of her par...