Predicted Infant Birthweight using model 1.

<p>Results pictured for mother’s age 26, gestational age 38 weeks, 11.3 kg (25 lbs) weight gain, averaged over effects of infant sex, prenatal care, smoking, hypertension, first born, and availability of prenatal information at the 50^th (A), 75^th (B), and 90^th (C) quantile.