Risk factors for neonatal death in twin gestations in the state of South Carolina.
The aim of the study was to describe risk factors for neonatal death among twins born in South Carolina.
South Carolina publicly accessible live birth and infant death cohort files for live-born twins>500 g were reviewed for the years 1988 through 1993.
Infants with lethal anomalies were deleted from the cohort before analysis.
Risk factors for neonatal death were determined for the entire cohort and for the birth weight categories of 500 to 999 g, 1000 to 1499 g, 1500 to 2499 g, and >=2500 g. Statistical comparisons were performed with the Mantel-Haenszel x2 test and multivariate logistic regression.
Of 7833 live-born twins, 263 (3.4%) died during the neonatal period.
The mean birth weight was 2357 ± 650 g (range 500-5358 g) at a mean gestational age of 35.7 ± 3.5 weeks.
Overall neonatal mortality rates were significantly increased (P<. 001) for twins whose mothers were nonwhite (4.2 vs 2.8%), were<20 years old (6.0 vs 3.2%), or received no prenatal care (14.7 vs 3.1%). After we controlled for population characteristics with multivariate techniques, analysis revealed birth weight<2500 g and residence in the most populous urban areas to be associated with increased neonatal mortality rates.
After stratification into birth weight categories, race was no longer a significant variable ; in fact, nonwhite twins had a survival advantage at birth weights<1500 g, but this was not significant. (...)
Mots-clés Pascal : Mortalité, Néonatal, Gestation gémellaire, Epidémiologie, Facteur risque, Nouveau né, Homme, Etats Unis, Amérique du Nord, Amérique, Gestation pathologie, Nouveau né pathologie
Mots-clés Pascal anglais : Mortality, Neonatal, Twin pregnancy, Epidemiology, Risk factor, Newborn, Human, United States, North America, America, Pregnancy disorders, Newborn diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0192248
Code Inist : 002B20G01. Création : 16/11/1999.