Abstract
This study investigates the role of a preceding birth interval in infant mortality by considering a causal ordering of seven variables. Data are from the 1974 World Fertility Survey for Korea and cover the survival of 6,161 index children. A two-stage logit model was used. The analysis suggests that infant mortality is directly influenced by the preceding birth interval which, in turn, is influenced by five other explanatory variables: maternal age, birth order, immediately preceding infant's death, education of mother, and place of residence. Maternal age and prior infant death also exert direct effects on mortality. In terms of relative risk, prior infant death has the strongest effect of all the explanatory variables. A longer birth interval increases the odds of an infant's survival by 25 per cent, whereas the death of a preceding child decreases the odds by 45 per cent. However, infant deaths in Korea occur infrequently in comparison with short birth intervals. Thus, the two factors present comparable attributable risks in unadjusted measurements. The first-stage causal structure affecting a birth interval is more complicated than the second-stage structure affecting infant mortality.
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- Carlaw R. W., Vaidya K. Birth intervals and the survival of children to age five--some data from Nepal. J Trop Pediatr. 1983 Feb;29(1):31–34. doi: 10.1093/tropej/29.1.31. [DOI] [PubMed] [Google Scholar]
- Cho L. J. Korea: estimating current fertility from the 1966 census. Stud Fam Plann. 1971 Mar;2(3):74–78. [PubMed] [Google Scholar]
- Donaldson P. J., Nichols D. J. The changing tempo of fertility in Korea. Popul Stud (Camb) 1978;32(2):231–250. [PubMed] [Google Scholar]
- Fortney J. A., Higgins J. E. The effect of birth interval on perinatal survival and birth weight. Public Health. 1984 Mar;98(2):73–83. doi: 10.1016/s0033-3506(84)80099-2. [DOI] [PubMed] [Google Scholar]
- Knodel J., Hermalin A. I. Effects of birth rank, maternal age, birth interval, and sibship size on infant and child mortality: evidence from 18th and 19th century reproductive histories. Am J Public Health. 1984 Oct;74(10):1098–1106. doi: 10.2105/ajph.74.10.1098. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Park C. B., Han S. H., Choe M. K. The effect of infant death on subsequent fertility in Korea and the role of family planning. Am J Public Health. 1979 Jun;69(6):557–565. doi: 10.2105/ajph.69.6.557. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Park C. B., Hexter A. C. Repeatability of infant deaths in Korea. Int J Epidemiol. 1984 Sep;13(3):304–310. doi: 10.1093/ije/13.3.304. [DOI] [PubMed] [Google Scholar]
- Swenson I. Relationships between pregnancy spacing, sex of infants, maternal age, and birth order, and neonatal and post-neonatal mortality in Bangladesh. Soc Biol. 1981 Fall-Winter;28(3-4):299–307. doi: 10.1080/19485565.1981.9988466. [DOI] [PubMed] [Google Scholar]
- Trussell J., Hammerslough C. A hazards-model analysis of the covariates of infant and child mortality in Sri Lanka. Demography. 1983 Feb;20(1):1–26. [PubMed] [Google Scholar]
- Winikoff B. The effects of birth spacing on child and maternal health. Stud Fam Plann. 1983 Oct;14(10):231–245. [PubMed] [Google Scholar]
- YERUSHALMY J., BIERMAN J. M., KEMP D. H., CONNOR A., FRENCH F. E. Longitudinal studies of pregnancy on the island of Kauai, Territory of Hawaii. I. Analysis of previous reproductive history. Am J Obstet Gynecol. 1956 Jan;71(1):80–96. doi: 10.1016/0002-9378(56)90682-2. [DOI] [PubMed] [Google Scholar]