Steele Fiona, Joshi Heather, Kallis Constantinos, Goldstein Harvey
University of Bristol, Bristol, UK.
Popul Stud (Camb). 2006 Jul;60(2):137-52. doi: 10.1080/00324720600598009.
We investigate the effect of parenthood on whether non-marital unions led to marriage or parting for two cohorts of British women when they were aged between 16 and 29. We compare the effect of conceptions leading to births and the presence and characteristics of children on the odds that a cohabitation was dissolved, or that it was converted to marriage, for women born in 1958 and 1970. A multilevel, multiprocess, competing-risks model allows for multiple cohabitation per woman and endogeneity of fertility status. We find that cohabiting couples' response to impending parenthood and the presence of children changed over time. In particular, the proportion of cohabiting couples who married before a birth decreased and, in the 1970 cohort only, the risk of dissolution declined during pregnancy. There is also evidence that the presence of a child cemented a cohabiting union for women from the 1970, but not the earlier, cohort.
我们研究了为人父母对两个年龄段在16至29岁之间的英国女性群体中非婚姻关系走向婚姻或分手的影响。我们比较了导致生育的怀孕情况以及孩子的存在和特征对1958年和1970年出生的女性同居关系解除或转变为婚姻的概率的影响。一个多层次、多过程、竞争风险模型考虑了每位女性的多次同居情况以及生育状况的内生性。我们发现同居伴侣对即将为人父母和孩子存在的反应随时间而变化。特别是，在孩子出生前结婚的同居伴侣比例下降，并且仅在1970年出生的群体中，怀孕期间关系解除的风险降低。还有证据表明，对于1970年出生的女性群体，孩子的存在巩固了同居关系，但对于更早出生的群体则不然。
