TABLE 4

Adjusted HRsa for Emergency Respiratory Admission up to Age 5 for Each Type of Respiratory Emergency Admission and Gestational Age Categories (N = 318 613)

Gestation (wk)Acute Upper RTIsInfluenza and PneumoniaAcute Lower RTIsAcute BronchiolitisAsthma
HR95% CIHR95% CIHR95% CIHR95% CIHR95% CI
40–4211111
391.081.02–1.151.071.07–1.121.111.07–1.161.161.10–1.211.060.9–1.15
381.101.02–1.181.191.09–1.301.261.21–1.321.331.26–1.401.141.03–1.26
371.121.01–1.241.271.12–1.441.541.45–1.631.591.49–1.711.161.01–1.33
35–361.080.96–1.221.531.34–1.751.731.62–1.851.891.75–2.031.201.02–1.40
33–341.261.05–1.511.681.39–2.042.171.99–2.382.452.21–2.711.561.25–1.94
<331.331.08–1.633.002.55–3.533.473.20–3.763.893.55–4.252.582.13–3.13
  • RTIs, respiratory tract infections.

  • a Adjusted for maternal age, parity, Townsend score quintile for social deprivation, gender, major or minor congenital anomaly, multiple birth, breastfeeding, Apgar score at 5 min, neonatal admission to hospital, and season of birth.