Table 6

Proportions and associations of long-term infants outcomes with induction of labour for non-medical reasons, stratified for gestational age groups (37–41 weeks), New South Wales, Australia 2001–2016 (n=4 74 146)

Spontaneous onset of labourInduction of labour for non-medical reasonsAOR* (99% CI)
Proportion n (%)Proportion n (%)
Asthma
 37+0–37+6698 (3.7)101 (3.2)1.00 (0.75 to 1.33)
 38+0–38+61728 (3.1)381 (3.1)1.06 (0.91 to 1.24)
 39+0–39+63569 (3.0)574 (2.8)1.02 (0.90 to 1.15)
 40+0–40+64701 (3.0)758 (2.6)0.96 (0.87 to 1.07)
 41+0–41+61700 (3.0)132 (2.8)1.10 (0.86 to 1.39)
Ear, nose and throat infections
 37+0–37+6967 (5.2)186 (5.9)1.15 (0.92 to 1.43)
 38+0–38+62550 (4.6)828 (6.7) 1.28 (1.15 to 1.43)
 39+0–39+65459 (4.6)1348 (6.7) 1.34 (1.23 to 1.45)
 40+0–40+67559 (4.8)1802 (6.3) 1.26 (1.18 to 1.36)
 41+0–41+62737 (4.9)246 (5.2)1.14 (0.95 to 1.36)
Eczema
 37+0–37+6155 (0.8)22 (0.7)0.97 (0.53 to 1.76)
 38+0–38+6427 (0.8)89 (0.7)1.01 (0.74 to 1.38)
 39+0–39+6916 (0.8)165 (0.8)1.19 (0.96 to 1.49)
 40+0–40+61137 (0.7)173 (0.6)0.88 (0.71 to 1.09)
 41+0–41+6429 (0.8)25 (0.5)0.80 (0.47 to 1.36)
Respiratory infections†
 37+0–37+63309 (17.6)629 (19.9) 1.20 (1.06 to 1.37)
 38+0–38+68778 (16.0)2596 (21.0) 1.32 (1.24 to 1.42)
 39+0–39+618 208 (15.3)3720 (18.4) 1.23 (1.17 to 1.30)
 40+0–40+624 346 (15.6)4906 (17.0) 1.17 (1.12 to 1.22)
 41+0–41+68501 (15.1)718 (15.1) 1.13 (1.01 to 1.27)
Infections‡
 37+0–37+61135 (6.0)231 (7.3)1.19 (0.97 to 1.45)
 38+0–38+63115 (5.7)741 (6.0)1.04 (0.93 to 1.17)
 39+0–39+66339 (5.3)1168 (5.8) 1.10 (1.01 to 1.20)
 40+0–40+68171 (5.2)1796 (6.2) 1.21 (1.13 to 1.30)
 41+0–41+62981 (5.3)284 (6.0)1.15 (0.97 to 1.36)
  • Associations in bold are statistically significant <0.01.

  • *Long-term health outcomes are adjusted for maternal characteristics (ie, maternal age, country of birth, socioeconomic, parity) and children’s birth year.

  • †Respiratory infections include admissions related to, for example, acute (obstructive) laryngitis, (bacterial) pneumonia.

  • ‡Infections include admissions related to, for example, bacterial sepsis, streptococcal sepsis.

  • AOR, adjusted OR.