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Table 4 Odds ratios (95% CI) for logistic regressions modeling associations between GA and SES for primary and secondary outcome groups

From: ‘The influence of gestational age and socioeconomic status on neonatal outcomes in late preterm and early term gestation: a population based study’

Morbidity group Any diagnosis (n = 4120) RDS (n = 135) Other complications of prematurity (n = 1167) Other respiratory (n = 1392) NICU admission (n = 2299) Phototherapy (n = 819)
Independent variables OR 95% CI OR 95% CI OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Gestational age (weeks)
34 vs 39/40 39.8 27.8–57.1 32.6 17.8–60.0 13.4 10.1–17.8 5.8 4.3–7.9 126.4 85.2–187.5 40.4 29.7–55.0
35 vs 39/40 11.1 8.9–13.8 19.6 10.7–36.2 8.9 7.7–11.3 3.5 2.7–4.6 25.9 20.6–32.7 20.2 12.3–26.6
36 vs 39/40 5.0 4.3–6.0 9.2 4.8–17.7 4.8 3.9–5.9 2.9 2.3–3.6 7.4 6.2–9.0 11.8 9.2–15.1
37 vs 39/40 1.9 1.7–2.2 4.5 2.4–8.6 2.1 1.8–2.6 1.3 1.0–1.6 2.8 2.4–3.3 3.9 3.1–5.0
38 vs 39/40 1.3 1.2–1.5 1.0 0.5–2.2 1.5 1.3–1.8 0.9 0.8–1.1 1.4 1.2–1.6 1.5 1.2–2.0
41 vs 39/40 1.0 0.9–1.1 0.9 0.4–2.1 1.0 0.8–1.2 1.0 0.8–1.1 1.0 0.9–1.2 1.1 0.9–1.5
SES group             
Low vs high 1.2 1.1–1.4 0.7 0.5–1.0 1.3 1.1–1.4 1.1 0.97–1.3 1.2 1.1–1.4 1.5 1.2–1.8
Middle vs high 1.3 1.2–1.4    1.2 1.1–1.4 1.3 1.2–1.5 1.3 1.2–1.5 1.3 1.0–1.5
  1. *low vs all other due to sample size. Models adjusted for: multiple gestation, maternal diabetes, infant gender, size for GA, congenital anomalies, need for resuscitation at birth, induced delivery, caesarean section delivery, primiparous, maternal age group, rural residence and breastfeeding initiation.
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