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Table 1 Baseline information of very preterm infants

From: Erythropoietin prevents necrotizing enterocolitis in very preterm infants: a randomized controlled trial

 

Control

n = 644

rhEPO

n = 641

p-value

Total

Gestation age (weeks), median (quartile range)

30.0 (29.0–31.0)

29.7 (28.9–30.9)

0.138

29.9 (29.0–30.9)

Birth weight (g), median (quartile range)

1300 (1100–1450)

1250 (1100–1410)

0.131

1300 (1100–1450)

Small for gestational age (%)

132/644 (20.5)

149/641 (23.2)

0.228 

281/1285 (21.9)

Male (%)

385/644 (59.8)

374/641(58.3)

0.601

759/1285 (59.1)

Severe asphyxia (%)

30/644 (4.7)

24/641 (3.7)

0.414

54/1285 (4.2)

Mechanical ventilation ≥ 7 days (%)

67/644 (10.4)

88/641 (13.7)

0.067

155/1285 (12.1)

Patent ductus arteriosus (%)

132/644 (20.5)

111/641 (17.3)

0.146

243/1285 (18.9)

Caesarean section (%)

384/644 (59.6)

401/641 (62.6)

0.281

785/1285 (61.1)

Premature rupture membranes (%)

234/644 (36.3)

227/641(35.4)

0.730

461/1285 (35.9)

Hypertension of pregnancy (%)

155/644 (24.1)

181/641 (28.2)

0.089

336/1285 (26.1)

First feeding (days), mean ± SD

4.3 ± 2.1

4.5 ± 2.2

0.324

4.4 ± 2.2

Formula milk feeding (%)

181/644 (28.1)

166/641 (25.9)

0.374

347/1285 (27.0)