Fig. 2.

Probabilities^a of delivering an infant too small or too large for gestational age by gestational weight gain in women with a normal^b body mass index (BMI), Nha Trang, Viet Nam, 2007–2008

^a Logistic regression analyses with cubic splines adjusted by maternal age, parity, household income, maternal education, exposure to environmental indoor smoking, total physical activity, infant sex and delivery week using the principal component method.

^b BMI ≥ 18.5 but < 23.0 kg/m².