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  • Title: Cohort fertility by age at marriage and marriage duration.
    Author: Das NC.
    Journal: Sarvekshana; 1979 Oct; 3(2):15-9. PubMed ID: 12338788.
    Abstract:
    The data presented here on cohort fertility by age at marriage and marriage duration were collected in the 19th round (July 1964-July 1965) of India's National Sample Survey. The data on fertility history collected in rounds 17 through 19 were tabulated by age at effective marriage. The couples were classified by wife's age at effective marriage below 15 years, 15-19 years, and 20-24 years. If age at effective marriage was recorded at an age lower than 12 years, age at effective marriage was treated as 12 years. From data of the 19th round, cohorts of married women were tabulated by parity and age at effective marriage. The said distributions refer to those by parity and wife's age at effective marriage for different marriage duration groups. The study is based on the assumption of natural fertility over age range between age at effective marriage and that at marriage duration of 15-19 years for women married at age below 20 years and between age at effective marriage and that at marriage duration of 10-14 years for women married at ages 20-24 years. The estimate of proportion having no child birth within a period of 15-19 years after effective marriage came out to be close to that of the corresponding proportion at marriage duration of 30 years and older for urban women married at ages below 20 years. In case of urban women married at ages 20-24 years, estimates of proportion having no child birth within a 10-14 year period after effective marriage and that of the corresponding proportion at marriage duration of 20-29 years are not close estimates as in cases of women married at ages below 20 years. Yet, the estimate came out to be almost of the same order of magnitude. For rural women married at ages 15-19 years, estimate of proportion having no child birth at marriage duration of 30 years and above came out to be nearly 20% higher than that of the corresponding proportion at marriage duration of 15-19 years. The estimate of proportion having no child birth at marriage duration of 30 years and above came out to be nearly 70% higher than that of the corresponding proportion at marriage duration of 15-19 years for rural women married at ages younger than 15. The women married at ages 20-24 years and remaining without child birth within a period of 10-14 years after effective marriage and those married at ages below 20 years and remaining without child birth within a period of 15-19 years after effective marriage may be treated as sterile. The proportion having realtive parity 5 and above among women married at ages 20-24 years came out at 36%: the corresponding proportion among women married at ages below 20 years came out as 46%.
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