Premarital first births: The influence of the timing of sexual onset versus post-onset risks in the United States.
Premarital first births: The influence of the timing of sexual onset versus post-onset risks in the United States.
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DOI：
10.1080/00324728.2015.1100318
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Martin SP
中科院分区：
文献类型：
--
作者：
Wu LL;Martin SP
出于禁欲支持者和怀疑者之间长期存在的争论，我们研究了社会经济因素如何通过以下方式影响婚前第一胎：（1）第一次性交的年龄和（2）发病后婚前第一胎的风险。与第一次性交年龄较早相关的因素将意味着更多的婚前第一胎，因为暴露于风险增加，但许多这些相同的因素也将与发病后婚前第一胎的风险较高有关。我们的分析证实了以前的研究结果，即来自弱势背景的妇女在第一次性交时更年轻，并且相对于那些来自更多弱势背景的妇女，婚前第一次生育的风险更高。然而，发病时间的差异对婚前第一胎概率的影响要比发病后风险的差异小得多。因此，我们的研究结果表明，婚前第一胎主要是由于发病后的风险行为的差异，而不是发病时间的差异。
Motivated by long-standing debates between abstinence proponents and skeptics, we examine how socioeconomic factors influence premarital first births via: (1) age at first sexual intercourse and (2) the risk of a premarital first birth following onset. Factors associated with an earlier age at first intercourse will imply more premarital first births due to increased exposure to risk, but many of these same factors will also be associated with higher risks of a premarital first birth following onset. Our analyses confirm previous findings that women from disadvantaged backgrounds are younger at first intercourse and have higher premarital first birth risks relative to those from more advantaged backgrounds. However, differences in onset timing have a strikingly smaller influence on premarital first birth probabilities than do differences in post-onset risks. Our findings thus suggest that premarital first births result primarily from differences in post-onset risk behaviors as opposed to differences in onset timing.