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Title: Factors influencing infant mortality in Vietnam.
Author: Swenson IE, Nguyen MT, Pham BS, Vu QN, Vu DM.
Journal: J Biosoc Sci; 1993 Jul; 25(3):285-302. PubMed ID: 8360224.
Abstract:
Selected determinants of overall infant mortality in Vietnam were examined using data from the 1988 Vietnam Demographic and Health Survey, and factors underlying neonatal and post-neonatal mortality were also compared. Effects of community development characteristics, including health care, were studied by logistic regression analysis in a subsample of rural children from the 1990 Vietnam Accessibility of Contraceptives Survey. Infant neonatal and post-neonatal mortality rates showed comparable distributions by birth order, maternal age, pregnancy intervals, mother's education and urban-rural residence. Rates were highest among first order births, births after an interval of less than 12 months, births to illiterate mothers and to those aged under 21 or over 35 years of age. Logistic regression analysis showed that the most significant predictor of infant mortality was residence in a province where overall infant mortality was over 40 per 1000 live births. In the rural subsample, availability of public transport was the most persistent community development predictor of infant mortality. Reasons for the low infant mortality rates in Vietnam compared to countries with similar levels of economic development are discussed. The purposes of this study of infant mortality in Viet Nam were to determine the contribution of select variables to infant mortality and to compare these determinants with determinants of neonatal and postneonatal mortality. Data were obtained from the 1988 Vietnam Demographic and Health Survey (DHS) and the Vietnam Accessibility of Contraceptives Study in 1990. The DHS Sample included 4172 women aged 15-49 years and reports on 4884 children born between 1983 and 1988 and a subsample of 3382 children born in rural areas between 1983 and 1988. Explanatory variables were mother's age at time of birth, mother's education, birth order, sex, previous birth interval, the infant mortality risk status of the province, residence, and regional location. The accessibility survey provided data on availability of health care services, characteristics of the village, and geography of the area. Logistic regression showed that none of the explanatory variables significantly affected the infant mortality rate (IMR) for first births. For second and higher order births, provincial infant mortality risk was the only significant explanatory variable for IMR, and for postneonatal mortality for first births total, and for second and higher order births in the rural population. Risk was higher in areas with a higher than 40/1000 IMR. For second and higher order births, none of the explanatory variables was a significant predictor of neonatal, postneonatal, or infant mortality for all areas. Birth orders of 2-4 had a significantly lower risk of infant mortality than birth order of 5 or greater. In the rural subsample, high and low risk provinces were equally likely to live among the mountains and highlands; high risk provinces were more likely to be in coastal and delta areas. Children from intermediate sized villages were more likely to live in high risk provinces from those living in villages of under 2000 population or larger villages with 10,000 population. Lower infant mortality rates were associated with living in areas with public transport, a secondary school, a telephone, and electricity. Low risk infant mortality provinces also had higher proportions of children living 10 km from a polyclinic which was open over 24 hour/weeks and having a nurse or midwife available. More children with a village midwife lived in high risk provinces. The presence of public transport was associated with a significantly lower IMR.

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