Reproductive versus chronologic age as a predictor of low birth weight, preterm delivery and intrauterine growth retardation in primiparous women

Author: Mitchell Laura   Bracken Michael  

Publisher: Informa Healthcare

ISSN: 1464-5033

Source: Annals of Human Biology, Vol.17, Iss.5, 1990-10, pp. : 377-386

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Abstract

The effect of reproductive age (chronologic age at conception minus menarcheal age) and chronologic age on the risks of low birth weight, preterm delivery and intrauterine growth retardation were studied in 1198 primiparous women whose pregancies ended in singleton live births at Yale — New Haven Hospital, 1980–1982. After adjustment for maternal race and other important confounding variables, neither young reproductive age ( 29 years) was also not strongly related to any of these outcomes, but older reproductive age (>15 years) was moderately associated with low birth weight (OR 1.9; 95% CI 0.9, 3.8) after adjusting for maternal race, religion and smoking status. In addition, extremely young reproductive age (