Abstract
Several questions have been raised about the effects of maternal smoking during pregnancy on the fetus, as measured by the dimensions of the newborn and the length of gestation. One question is the dose-response relationship, taking the extent of smoking into account. A second question relates to the "constitutional" explanation, i.e., that women who smoke have an intrinsic constitutional tendency to have small and premature neonates.1
Using data on more than 19,000 normal singlings from the Collaborative Perinatal Project of the National Institute of Neurological and Communicative Diseases and Stroke (NINCDS),2 a fairly linear relationship exists between the level of cigarette usage and various measures of size and prematurity.3
- Copyright © 1978 by the American Academy of Pediatrics
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