Absolute risk difference of adverse birth outcomes in relation to maternal age by log-binomial model.

<p>Reference year of maternal age: 27.</p><p>* p<0.05.</p>†<p>n = 2,123,751 births;</p>‡<p>n = 2,045,748 singleton live births. Covariates: (1) <u>composite adverse birth outcome</u> (at least one of stillbirth, preterm birth, low birth weight, congenital anomaly, macrosomia, neonatal death, and SGA): pregnancy-related disorders, obstetric complications, ethnicity, birth region, birth year, parity, sex at birth, Apgar score, and delivery mode; (2) <u>stillbirth</u>: pregnancy-related disorders, obstetric complications, ethnicity, birth region, birth year, sex at birth, parity, congenital anomalies, neonatal death, Apgar score, delivery mode, gestational age, and birth weight; (3) <u>preterm birth</u>: pregnancy-related disorders, obstetric complications, ethnicity, birth region, birth year, sex at birth, parity, congenital anomalies, neonatal death, Apgar score, delivery mode, and birth weight; (4) <u>low birth weight</u>: pregnancy-related disorders, obstetric complications, ethnicity, birth region, birth year, sex at birth, parity, congenital anomalies, neonatal death, Apgar score, delivery mode, and gestational age.</p><p>Absolute risk difference of adverse birth outcomes in relation to maternal age by log-binomial model.