|
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
|
|
5th 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
|
