搜索结果: 1-4 共查到“计划生育学 The relationship”相关记录4条 . 查询时间(0.109 秒)
How does education change the relationship between fertility and age-dependency under environmental constraints? A long-term simulation exercise
aging dependency human capital low fertility optimal fertility
2014/11/26
Background: When asked what a desirable fertility level for populations might be, most politicians, journalists, and even social scientists would say it is around two children per woman, a level that ...
The Relationship Context of Contraceptive Use At First Intercourse
Contraceptive Use sexually active adolescents First Intercourse
2009/9/15
Context: Despite widespread efforts to increase contraceptive use to prevent both pregnancy and sexually transmitted diseases among sexually active adolescents, most prior work examining adolescent co...
Relationship Dynamics, Ethnicity and Condom Use Among Low-Income Women
Ethnicity Low-Income Women Condom Use
2009/9/15
Context: Women's protection against HIV and sexually transmitted diseases (STDs) depends upon their ability to negotiate safer sex. It is important to know how cultural norms and gender roles, which v...
Stage of Behavior Change for Condom Use：The Influence of Partner Type, Relationship and Pregnancy Factors
Condom Use Pregnancy Factors Partner Type reproductive age
2009/9/14
A theoretical model was used to examine the influence of relationship factors, pregnancy intentions, contraceptive behavior and other psychosocial characteristics on stages of behavior change in condo...