Risks of perinatal mortality and morbidity (the occurrence of stillbirth, neonatal death, or 5-min Apgar score <4) by birthweight percentile (excluding deaths due to congenital anomalies).

a<p>The occurrence of stillbirth or neonatal death.</p>b<p>Data are adjusted ORs estimated from multiple regression models adjusted for maternal age, gestational age, parity, infant sex, maternal diabetes, chronic hypertension, pregnancy associated hypertension, eclampsia, smoking, social economic status (marital status, education) and month of prenatal care started.</p>c<p>The occurrence of stillbirth, neonatal death, or 5-min Apgar score less than four.