Correlates of intrauterine growth rate: application of a log-linear model.

A prospective study was conducted in the North Arcot District, Tamil Nadu State, India, to determine the correlates of intrauterine growth rate (IUGR), which was assessed using Yerushalmy's classification based on birth weight and gestational age. Using a log-linear model, we studied 4220 single live births with complete information on IUGR and obstetric, paternal, maternal, and familial factors. Parental body weights, consanguinity, and area of residence were identified as important predictors of IUGR.