Distribution of Closed Birth Intervals in a Heterogeneous Population |
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| Authors: | SHANKAR DIHIDAR |
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| Affiliation: | 1. Bayesian and Interdisciplinary Research Unit , Indian Statistical Institute , Kolkata , West Bengal , India dshankar@isical.ac.in;4. dihidar.shankar@gmail.com |
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| Abstract: | The probability distribution of parity-specific closed birth intervals in a heterogeneous population of women is obtained from Biswas' (1980) concept of gradually decreasing fecundabilities. The distribution of parity-specific last closed birth intervals and its moments of various orders are derived for a heterogeneous female population. Simulations are used to compare with models for a homogeneous female population with constant fecundability. The consideration of heterogeneity allows a better fit for empirical closed birth intervals. |
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| Keywords: | birth order birth spacing fecundability fertility mortality parity progression ratio |
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