Family influence in fertility: A longitudinal analysis of sibling correlations in first birth risk and completed fertility among Swedish men and women
J Dahlberg - Demographic Research, 2013 - JSTOR
Demographic Research, 2013•JSTOR
BACKGROUND The intergenerational transmission of fertility has received much attention in
demography. This has been done by estimating the correlation between parents' and
offsprings' fertility. An alternative method that provides a more comprehensive account of the
role of family background-sibling correlations-has not been used before. OBJECTIVE I
estimate the overall importance of family background on entry into parenthood and
completed fertility and whether it changed over time. Furthermore, I compare the …
demography. This has been done by estimating the correlation between parents' and
offsprings' fertility. An alternative method that provides a more comprehensive account of the
role of family background-sibling correlations-has not been used before. OBJECTIVE I
estimate the overall importance of family background on entry into parenthood and
completed fertility and whether it changed over time. Furthermore, I compare the …
BACKGROUND
The intergenerational transmission of fertility has received much attention in demography. This has been done by estimating the correlation between parents’ and offsprings’ fertility. An alternative method that provides a more comprehensive account of the role of family background - sibling correlations - has not been used before.
OBJECTIVE
I estimate the overall importance of family background on entry into parenthood and completed fertility and whether it changed over time. Furthermore, I compare the intergenerational correlation in completed fertility with corresponding sibling correlations.
METHODS
Brother and sister correlations in first birth hazard and in final family size were estimated using multi-level event-history and multi-level linear regression on Swedish longitudinal register data.
RESULTS
The overall variation in fertility that can be explained by family of origin is approximately 15%-25% for women and 10%-15% for men. The overall importance of the family of origin has not changed over the approximately twenty birth cohorts that were studied (1940-63 for women, 1940-58 for men). Parents’ completed fertility accounts for only a small share of the total family background effect on completed fertility.
CONCLUSIONS
This study contributes to the existing understanding of intergenerational transition of fertility, both methodologically, by introducing a new and powerful method to study the overall importance of family of origin, and substantially, by estimating the overall importance of family of origin and its development over time. A non-negligible proportion of the variation in fertility can be attributed to family of origin and this effect has remained stable over twenty birth cohorts.
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