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Table 2 Relationship between haemoglobin at birth and primary outcomes (n = 890)

From: Haemoglobin level at birth is associated with short term outcomes and mortality in preterm infants

Short term outcomes Number (%) Haemoglobin at birth (g/dL) P values for trend
OR <12 12 to <14 14 to <16 16 to <18 18+
(95% CI) n = 67 n = 124 n = 122 n = 408 n = 169
Deaths before discharge 103 (11.6) Crude 19.5 (7.6–50.4) 6.5 (2.6–16.5) 2.8 (1.2–6.7) 1.7 (0.5–5.0) 1 <0.01
Adjusted 4.1 (1.4–11.6) 2.0 (0.7–5.4) 1.5 (0.6–3.7) 1.7 (0.5–5.7) 1 0.01
Intraventricular haemorrhage (All grades) 233 (26.2) Crude 4.2 (2.2–8.0) 3.6 (2.1–6.2) 2.1 (1.3–3.3) 1.0 (0.5–1.8) 1 <0.01
Adjusted 1.6 (0.8–3.3) 1.9 (1.0–3.4) 1.5 (1.0–2.4) 0.9 (0.5–1.8) 1 0.53
Necrotising enterocolitis (All grades) 195 (21.9) Crude 2.6 (1.3–5.1) 3.2 (1.8–5.7) 1.7 (1.0–2.8) 1.1 (0.6–2.1) 1 <0.01
Adjusted 1.0 (0.5–2.2) 1.8 (1.0–3.4) 1.3 (0.8–2.2) 1.2 (0.6–2.3) 1 0.31
Bronchopulmonary dysplasia 242 (27.2) Crude 3.1 (1.7–5.9) 3.1 (1.8–5.3) 2.0 (1.3–3.1) 0.6 (0.3–1.1) 1 <0.01
Adjusted 0.5 (0.3–1.1) 1.0 (0.5–1.9) 1.2 (0.7–2.0) 0.5 (0.2–1.1) 1 0.64
Retinopathy of prematurity (All grades) 185 (20.8) Crude 3.2 (1.5–6.4) 4.9 (2.7–8.8) 1.9 (1.2–3.2) 0.9 (0.4–1.9) 1 <0.01
Adjusted 0.7 (0.3–1.5) 1.9 (1.0–3.8) 1.2 (0.7–2.1) 0.9 (0.4–2.0) 1 0.72
  1. Adjusted odds ratio (OR) for gestational age and birth weight.