Analyzing the effect of prenatal care on pregnancy outcome: a conditional approach.
M H Malloy,
T C Kao and
Y J Lee
Division of Prevention Research, National Institute of Child Health and Human Development, Bethesda, Maryland.
We used vital statistics data to examine the effect of the timeof entry into prenatal care relative to the gestational ageof delivery on pregnancy outcome. Early entry into prenatalcare was associated with better outcomes only in women who deliveredat 37 through 42 weeks of gestation. We are concerned that theevaluation of the effect of prenatal care using vital statisticsdata may be questionable because of the problems inherent inthe data.
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