Format

Send to

Choose Destination
Am J Public Health. 1992 Mar;82(3):378-82.

Birth weight and perinatal mortality: the effect of gestational age.

Author information

1
Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709.

Abstract

BACKGROUND:

The strong association between birth weight and perinatal mortality is due both to gestational age and to factors unrelated to gestational age. Conventional analysis obscures these separate contributions to perinatal mortality, and overemphasizes the role of birth weight. An alternative approach is used here to separate gestational age from other factors.

METHODS:

Data are from 400,000 singleton births in the Norwegian Medical Birth Registry. The method of Wilcox and Russell is used to distinguish the contributions to perinatal mortality made by gestational age and by relative birth weight at each gestational age.

RESULTS:

Gestational age is a powerful predictor of birth weight and perinatal survival. After these effects of gestational age are controlled for, relative birth weight retains a strong association with survival.

CONCLUSIONS:

Current public health policies in the United States emphasize the prevention of low birth weight. The present analysis suggests that the prevention of early delivery would benefit babies of all birth weights.

PMID:
1536353
PMCID:
PMC1694365
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for PubMed Central
Loading ...
Support Center