Adjusted effect of parenteral nutrition use on weight, head circumference, and length of NICU stay.

Analysis of 4,005 very low birth weight infants of 24–32 weeks' gestation who reached full enteral feeding within 2 weeks.Generalized linear mixed models (logistic regression with random intercepts) used to accounting for clustering within institutions. Adjusted for selected maternal (maternal age, number of previous deliveries, number of fetuses, gestational diabetes, pregnancy induced hypertension, use of antenatal steroids, mode of delivery), and infant (gestational length, sex, birth weight, birth head circumference, Apgar score at 5 minutes, days to reach 100 ml per kg per day enteral feeding, length of stay) characteristics.Full enteral feeding: 100 ml per kg per day of milk.EUGR: Extra-uterine growth restriction; defined as weight or head circumference th percentile for postmenstrual age.