this analysis showed that birth weight of the infant was positively related to number of weeks of gestation , overall dietary quality , delivery weight of the mother squared , age of the mother squared , and number of previous pregnancies squared , and negatively related to weeks of gestation squared , iron and protein intake , age of mother , number of people in the household , and number of cigarettes smoked by the mother per day .
C0005612
birth weight
C0005910
weight