OR (95% CI)OR (95% CI)OR (95% CI)
Low (<7) Apgar score at 5 min1.36 (1.33 to 1.40)1.31 (1.28 to 1.34)1.45 (1.41 to 1.48)
Encephalopathy1.40 (1.32 to 1.49)1.34 (1.26 to 1.42)1.38 (1.29 to 1.47)
  • Data are mean difference (95% CI) or OR (95% CI) for each increasing week of gestational age at birth.

  • All P values are <0.001.

  • *Adjusted for sex, parity, maternal age, maternal education and maternal occupation.

  • †Adjusted for maternal pre-eclampsia, multiple birth, caesarean section, birth weight, maternal infection and infant infection.