青少年性行为开始、避孕措施使用及怀孕的 antecedents（此词在医学文献中可根据上下文灵活准确翻译，比如“前期因素”等，此处因不清楚具体所指暂保留英文） 。
Antecedents of adolescent initiation of sex, contraceptive use, and pregnancy.
作者信息
Kirby Douglas
机构信息
ETR Associates, Santa Cruz, CA, 95061-1830, USA.
出版信息
Am J Health Behav. 2002 Nov-Dec;26(6):473-85. doi: 10.5993/ajhb.26.6.8.
OBJECTIVE
To identify the most important antecedents associated with adolescent initiation of sex, contraceptive use, and pregnancy.
METHODS
Statistically significant antecedents in more than 250 studies were identified and summarized.
RESULTS
More than 100 antecedents create a complex and detailed picture of the correlates of adolescent sexual behaviors. They describe characteristics of the adolescents themselves, their partners, peers, families, schools, and communities, as well as relationships to these entities. They included antecedents that were inherently sexual and nonsexual.
CONCLUSIONS
To reduce teen pregnancy substantially, multiple sexual and nonsexual antecedents in different clusters may need to be addressed.
目的
确定与青少年开始性行为、使用避孕药具及怀孕相关的最重要的先行因素。
方法
识别并总结了250多项研究中具有统计学意义的先行因素。
结果
100多个先行因素勾勒出一幅关于青少年性行为相关因素的复杂而详尽的图景。它们描述了青少年自身、其伴侣、同龄人、家庭、学校和社区的特征，以及与这些实体的关系。其中包括本质上与性相关和与性无关的先行因素。
结论
为大幅减少青少年怀孕现象，可能需要解决不同类别中的多个与性相关和与性无关的先行因素。
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