The two-child family continues to constitute the most common family model in the Czech Republic. However, the postponement of family formation and childbearing means that second births are being shifted to an older age.
Employing data from the 'Women 2016' survey, we analyse both the reasons behind women postponing second childbirth to a later age than originally planned and the effect of fertility postponement on the length of the birth interval between the first and second child.