Fertility rates in Denmark in relation to the sexes of preceding children in the family
Fertility rates in Denmark in relation to the sexes of preceding children in the family
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DOI：
10.1093/humrep/14.4.1127
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发表时间：
1999-04-01
影响因子：
6.1
通讯作者：
Engholm, G
中科院分区：
文献类型：
--
作者：
Jacobsen, R;Moller, H;Engholm, G
性别组合的影响，以前出生的孩子在家庭中的生育率进行了分析363373丹麦家庭，共613900名儿童，以解决性别偏好和组合偏好的问题。生育率分层的父母年龄，时期和潜伏期的下一个孩子，和生育率比估计使用乘法泊松回归模型。我们的研究结果表明，丹麦家庭的性别组成平衡的强烈偏好，在有两个或三个孩子的家庭中，生育率最高的家庭中有同性孩子。生育率最低的家庭是有两个同性子女，其次是一个异性子女的家庭。两个男孩的家庭的生育率高于两个女孩的家庭，这表明对女孩的中等性偏好。
Analysis of the effect of sex combination of previously born children in the family on fertility rates was performed for 363373 Danish families comprising a total of 613900 children, to address the questions of sex preference and combination preference. The fertility rates were stratified by parental age, period and latency time to the next child, and fertility rate ratios were estimated using multiplicative Poisson regression models. Our results demonstrate a strong preference for a balanced composition of sexes in Danish families, In families with two or three children the highest fertility rates were seen in families who had same-sexed children. The lowest fertility rates were in families with two children of identical sex followed by a child of the opposite sex. A moderate sex preference for girls was indicated by higher fertility rates in two-boy families than in two-girl families.