PEDIATRICS Vol. 93 No. 4 April 1994, pp. 611-615
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Outcome of Very Low Birth Weight Infants: Multiple Gestation Versus Singletons

Carol H. Leonard PhD1, Robert E. Piecuch MD1, Roberta A. Ballard MD2, and Bruce A. B. Cooper PhD3

1 Department of Pediatrics, University of California, San Francisco, CA
2 Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA
3 California School of Professional Psychology, Alameda, CA

Objective. Multiple gestation infants are overrepresented in intensive care nurseries, and have been reported to have greater morbidity than singletons. A cohort of very low birth weight infants was examined to determine outcome of premature infants based on gestation type (multiple or single) and hypothesized that at this low birth weight, the outcome of the groups would be similar.

Method. The sample was composed of all infants with birth weights le1250 g born in a 10-year period (September 1977 through September 1987). Ninety-two percent (n = 364) of the infants discharged were seen at 1 year of age, and 73% (n = 249) were observed to school age. Morbidity was assessed by neurodevelopmental examinalions and standard developmental tests.

Results. At 1 year of age and at school age, there were no differences in neurologic or neurosensory outcome between multiple gestation and single gestation infants. Logistic regression analyses were performed on the school age data, using cognitive outcome as the dependent variable and gestation type, birth weight, gestational age, intracranial hemorrhage, chronic lung disease, and a social risk factor as predictor variables. Gestation type was not associated with cognitive outcome at school age. Social risk factors and chronic lung disease showed an association with cognitive outcome at school age.

Conclusions. Multiple gestation was not related to increased morbidity in this very low birth weight group. The developmental outcome of all infants with birth weights le1250 g in this study was related to medical and social risk factors. These findings were consistent for a large group of infants over a 10-year period.

Submitted on April 15, 1993
Accepted on August 31, 1993




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