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| Abstract
Despite the small size of Denmark, there have traditionally been rather consistent regional differences in fertility rates. We apply the statistical age-period-cohort model to include the effect of these three time-related factors thereby concisely illuminating the regional differences of first-time births in Denmark. From the Fertility of Women and Couples Dataset we obtain data on number of births by nulliparous women by year (1980-1994), age (15-45) and county of residence. We show that the APC-model describes the fertility rates of nulliparous women satisfactorily. To catch the regional variation an interaction parameter between age and county is necessary, which provides a surprisingly good description suggesting that the county-specific age-distributions of first-time fertility rates differ. Our results are in general agreement with the 'moral geography' concepts of Tonboe (2001). Author's affiliation
Lau Caspar Thygesen
National Institute of Public Health, Copenhagen, Denmark
Lisbeth B. Knudsen
Aalborg University, Denmark
Niels Keiding
University of Copenhagen, Denmark Keywords
age-period-cohort models, Denmark, fertility, fertility rate, nulliparous women, regional variation Word count (Main text)
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