Table 2 Clinical characteristics of transfused vs. not transfused infants

Gestational age (weeks)

28.8 ± 2.6

31.1 ± 2.7

<0.001

Gestational age <28 weeks [n (%)]

798 (36.1 %)

230 (11.1 %)

<0.001

Birth weight (grams)

971 ± 254

1205 ± 242

<0.001

Birth weight <1000 grams [n (%)]

1211 (54.8 %)

380 (18.3 %)

<0.001

5^th minute Apgar <7 [n (%)]

428 (19.4 %)

184 (8.9 %)

<0.001

SNAPPE II (score)

30 ± 22

18 ± 18

<0.001

Respiratory distress syndrome [n (%)]

1749 (79.2 %)

1006 (48.5 %)

<0.001

Apnea [n (%)]

1168 (52.9 %)

658 (31.7 %)

<0.001

Pulmonary hemorrhage [n (%)]

216 (9.8 %)

46 (2.2 %)

<0.001

Patent ductus arteriosus [n (%)]

955 (43.3 %)

488 (23.5 %)

<0.001

Clinical sepsis [n (%)]

1808 (81.9 %)

755 (36.4 %)

<0.001

Necrotizing enterocolitis [n (%)]

266 (12.0 %)

41 (2.0 %)

<0.001

PIVH grade 3-4 [n (%)]

240 (10.9 %)

85 (4.1 %)

<0.001

Periventricular leukomalacia [n (%)]

183 (8.3 %)

81 (3.9 %)

<0.001

Retinophaty of prematurity [n (%)]

514 (23.3 %)

273 (13.2 %)

<0.001

Need for oxygen at 28 days of life [n (%)]

799 (36.2 %)

287 (13.8 %)

<0.001

Need for O₂ therapy at 36 weeks [n (%)]

485 (22.0 %)

153 (7.4 %)

<0.001

Use of umbilical catheter [n (%)]

1677 (76.0 %)

1080 (52.0 %)

<0.001

Need for mechanical ventilation [n (%)]

1848 (83.7 %)

767 (37.0 %)

<0.001

Duration of mechanical ventilation (days)

13 ± 19

3 ± 8

<0.001

Need for vasoactive drugs [n (%)]

328 (14.9 %)

119 (5.7 %)

<0.001

Use of paraenteral nutrition [n (%)]

2136 (96.7 %)

1666 (80.3 %)

<0.001

Duration of hospitalization (days)

59 ± 41

35 ± 20

<0.001

Hospitalization > 60 days [n (%)]

1053 (47.7 %)

184 (8.9 %)

<0.001

Intra-hospital death [n (%)]

662 (30.0 %)

300 (14.5 %)

<0.001