Estimation of parity progression ratios from birth order statistics
Pandey, A.; Saxena, N.C.; Singh, K.K.
Genus 52(1-2): 9
1997
ISSN/ISBN: 0016-6987 DOI: 10.2307/29788501Document Number: 198839
This paper presents a technique which estimates parity progression ratios (PPRs) from birth order statistics. The method proposed here is an improvement over existing techniques for two reasons. One, it utilizes the required input data from the same vital registration system. Second, all the input data refer to the same period. Thus, it overcomes the major problem of obtaining mothers mean age at birth at different orders which were typically derived from maternity, histories provided by survey data. This technique has been illustrated using data from the Census of India, 1981 and the Sample Registration System of India, 1990. We find that the estimates of PPR so derived are more sensitive to the changes in distribution of births than other inputs.