A note on the cohort-fertility analysis in the paper ‘Patterns of low and lowest-low fertility in Europe’, Population Studies 58(2): 161–176, by Francesco C. Billari and Hans-Peter Kohler.

The article presents the authors' comments on the paper entitled, "Patterns of Low and Lowest-Low Fertility in Europe," by Francesco C. Billari and Hans-Peter Kohler, published in a 2004 issue of the journal "Population Studies." In their comment, the authors argue that the original authors' comparison of cohort-fertility patterns in the lowest-low fertility countries of Southern, Central, and Eastern Europe with Dutch cohort patterns is weak on theoretical grounds and that the empirical analysis is incomplete. The empirical analysis demonstrates that in the young cohorts of Southern, Central, and Eastern Europe, childbearing may very well decline below the levels observed in the Netherlands and in other West European countries. This is already happening in Southern Europe. Moreover, the childbearing surplus in early adulthood is evaporating, and the recuperation that would be needed for completed cohort fertility in these countries to remain above that of many West European countries is of such magnitude that it is doubtful whether it could occur.