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  • Title: A continuous time model for first birth in rural environment of India.
    Author: Singh SN, Singh VK, Burman D.
    Journal: Rural Demogr; 1985; 12(1-2):55-62. PubMed ID: 12280832.
    Abstract:
    A continuous time model has been derived for 1st birth interval, incorporating fetal wastage and assuming a specific distribution of the associated nonsusceptible period. The model has been extended to deal with the data coming from rural areas of India where 1st birth intervals are highly influenced by some marriage customs. To illustrate the applicability of the suggested model, data was taken from Chakrabarty (1976). For each of 2200 selected households from 52 villages of Varanasi Tehsil, the information on household structure, facilities, migration, and mortality were obtained along with detailed information on birth record, total number of born and alive children, birth intervals, and duration of nonsusceptible periods. Table 1 presents the frequency distribution of the time of 1st live birth conception for females who were married at or after age 16 and whose marriage durations exceeded 10 years. The influence of some of the social customs on the 1st live birth interval, in this case where early marriage was common, was not less than that of biological factors. In this context, the suggested model has been modified to apply it to an empirical distribution.
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