Conceptive Delay, Nonsusceptible Period, and Cohort Fertility Patterns
Author(s) -
Che-Fu Lee,
Kuang-Hua Lin
Publication year - 1975
Publication title -
demography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.099
H-Index - 129
eISSN - 1533-7790
pISSN - 0070-3370
DOI - 10.2307/2060739
Subject(s) - fertility , period (music) , demography , cohort , population , medicine , sociology , physics , acoustics
A model of cohort fertility pattern by duration of marriage is built on the parameters of conceptive risk, its decline along parity, and the length of the nonsusceptible period. The model is found to fit satis-factorily a variety of cohort fertility patterns. Birth intervals by parity are then inferred from the estimated parameters. The present model is developed for comparative analyses of fertility trends and for fertility projections which take into account ongoing changes in birth intervals and completed family-size distributions which may be observed in current sample surveys.
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