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