Population and Environment

, Volume 25, Issue 6, pp 531–561

The Interrelations Between Cohabitation, Marriage and First Birth in Germany and Sweden

  • Pau Baizán
  • Arnstein Aassve
  • Francesco C. Billari

DOI: 10.1023/B:POEN.0000039064.65655.3b

Cite this article as:
Baizán, P., Aassve, A. & Billari, F.C. Population and Environment (2004) 25: 531. doi:10.1023/B:POEN.0000039064.65655.3b


We study the interrelationships between union-formation forms and fertility in Swedish and West German female cohorts born in 1949–1971. We apply simultaneous hazard models, permitting the presence of correlated unobserved heterogeneity. This method allows us to control for country-specific composition of the population with respect to several socio-economic variables, as well as with respect to unobserved factors jointly affecting childbearing and union formation behavior. Our results confirm that partnership formation and the transition to parenthood are partially interchangeable. Net of those selection effects, we find that the impact of being in a union on first birth is higher in Sweden than in Germany, in particular for cohabitation.

fertilitynuptialityselection effectsGermanySweden

Copyright information

© Springer Science+Business Media, Inc. 2004

Authors and Affiliations

  • Pau Baizán
    • 1
  • Arnstein Aassve
    • 2
  • Francesco C. Billari
    • 3
  1. 1.Department of Political and Social SciencesInstitució Catalana de Recerca i Estudis Avançats (ICREA) and Pompeu Fabra UniversityBarcelonaSpain
  2. 2.ISERUniversity of Essexuk
  3. 3.Institute of Quantitative MethodsBocconi University and Innocenzo Gasparini Institute for Economic Research (IGIER)uk