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Table 6 Multivariate logistic regression II

From: Short-term respiratory outcomes in late preterm infants

  Odds ratio estimates (95% confidence interval)
  CRM N-CPAP MV
Gest. age, weeks 39–40–41 1 1 1
Gest. age, week 38 1.5 (0.9– 2.4) 2.0 (0.9–4.5) 0.96 (0.3–3.1)
Gest. age, week 37 3.3 (2.0–5.5) 5.1 (2.3–11.4) 3.4 (1.2–10.0)
Gest. age, week 36 9.1 (5.1–16.2) 13.3 (5.5–32.2) 11.1 (3.2–38.8)
Gest. age, week 35 21.8 (11.5–41.5) 34.9 (13.5–90.0) 18.0 (4.2–77.5)
Gest. age, week 34 40.8 (19.7 –84.9) 55.9 (19.3–162.0) 34.4 (6.7–180.6)
Spontaneous delivery 1 1 1
CS without labor 3.0 (2.1–4.2) 3.7 (2.3–6.0) 2.9 (1.3–6.3)
CS with labor 2.2 (1.4–3.4) 2.5 (1.4–4.8) 2.1 (0.8–5.6)
Maternal medical disorders no 1 1 1
Maternal medical disorders yes 1.3 (0.9–1.8) 1.3 (0.7–1.6) 1.7 (0.8–3.4)
Twins birth no 1 1 1
Twins birth yes 0.9 (0.5–1.4) 1.0 (0.6–1.7) 0.3 (0.1–1.3)
Birth weight, g 1.0 (0.98–1.1) 1.0 (0.9–1.05) 1.1 (0.98–1.2)
Female 1 1 1
Male 1.4 (1.1–1.9) 1.5 (1.0–2.3) 1.8 (0.9–3.6)
Malformation no 1 1 1
Malformation yes 8.9 (5.3–15.1) 2.4 (0.9–6.2) 26.0 (12.5–54.1)
Small for gestational age no 1 1 1
Small for gestational age yes 1.0 (0.6–1.8) 0.6 (0.3–1.3) 2.6 (0.9–7.9)
  1. Data compare composite respiratory morbidities (CRM), use of nasal continuous positive airway pressure (N-CPAP) and use of mechanical ventilation (MV) across gestational ages, adjusting for maternal and neonatal characteristics (OR = 1 indicates the reference category).