Appendix Appendix B

Appendix A

The shape of the duration effect differs across the woman's and the man's age groups (Figure 3 and Figure 4). For women the baseline hazard is slightly altered for the age group 25-29. Not only is this the age group that exhibits the highest intensity of a first child. In addition, the duration across which this intensity can be observed is prolonged up to the 21st month as compared to the baseline hazard in Model 4 (Table 3), where the highest intensity could be observed from the 10th to the 15th month. For the man's age the baseline hazard is shifted to the right in the age group 25-29, i.e., the highest intensity of the conception of a first child is observed from the 16th to the 21st month. In contrast, the highest intensities of the baseline hazard for the other age groups are observed already from the 10th to the15th month [Note 19].

In order to test whether the duration variable differs according to marital status we recoded the two covariates into one, since the level "pre-cohabiting" is only defined for the period before moving into a joint household, i.e. for the first nine months of the duration variable. A model with a combination of marital status and duration has the following structure (Figure 5): Married couples have the highest intensities for all time intervals since the start of the second union. Especially during the time period from the 10th to the 21st month, which corresponds to the first half year after marriage for the majority of the respondents, the intensity for conceiving a first common child is very pronounced. Couples for which we have defined the time of exposure as starting prior to moving in together have a slightly increased risk of conception shortly before cohabiting (as indicated by the blue line for months 6 to 9) compared to couples who already live together (as indicated by the red line).

 

Appendix Appendix B

Fertility in second unions in Austria: Findings from the Austrian FFS
Isabella Buber, Alexia Prskawetz
© 2000 Max-Planck-Gesellschaft ISSN 1435-9871
http://www.demographic-research.org/Volumes/Vol3/2