Table 2.
Gestational age | 24 weeks | 25 weeks | 26 weeks | 27 weeks | 28 weeks | 29 weeks | 30 week | 31 week | Total |
---|---|---|---|---|---|---|---|---|---|
Numbers (%) | 11 | 25 | 33 | 79 | 199 | 321 | 444 | 648 | 1760 |
Died within 7 days (%) | 6 (54.5) | 13 (52.0) | 3 (9.1) | 8 (10.1) | 7 (3.5) | 9 (2.8) | 6 (1.4) | 2 (0.3) | 54 (3.1) |
Died before discharge (%) | 5 (45.5) | 5 (20.0) | 2 (6.1) | 5 (6.3) | 18 (9.1) | 21 (6.5) | 21 (4.7) | 24 (3.7) | 101 (5.7) |
Survived to discharge (%)a | 0 (0) | 7 (28.0) | 28 (84.8) | 66 (83.5) | 174 (87.4) | 291 (90.7) | 417 (93.9) | 622 (96.0) | 1605 (91.2) |
Survived without morbidity (%)b | 0 (0) | 2 (8.0) | 20 (60.6) | 42 (53.2) | 124 (62.3) | 218 (67.9) | 351 (79.1) | 556 (85.8) | 1313 (74.6) |
Died or survived with at least one morbidity (%) | 11 (100) | 23 (92.0) | 13 (39.4) | 37 (46.8) | 75 (37.7) | 103 (32.1) | 93 (20.9) | 92 (14.2) | 447 (25.4) |
RDS (%) | 10 (90.9) | 22 (88.0) | 29 (87.9) | 69 (87.3) | 167 (83.9) | 223 (69.5) | 234 (52.7) | 276 (42.6) | 1030 (58.5) |
BPD (%)c | - | 4 (57.1) | 11 (39.3) | 20 (30.3) | 45 (25.9) | 63 (21.6) | 33 (7.9) | 24 (3.9) | 200 (12.5) |
NEC (%)d | - | 0 (0) | 2 (6.7) | 7 (9.9) | 13 (6.8) | 11 (3.5) | 10 (2.3) | 23 (3.6) | 66 (3.9) |
IVH (%)d | - | 5 (41.7) | 7 (23.3) | 23 (32.4) | 31 (16.1) | 50 (16.0) | 61 (13.9) | 85 (13.2) | 262 (15.4) |
PDA (%)d | - | 4 (33.3) | 11 (36.7) | 30 (42.3) | 59 (30.7) | 102 (32.7) | 117 (26.7) | 162 (25.1) | 485 (28.4) |
ROP (%)c | - | 2 (28.6) | 5 (17.9) | 10 (15.2) | 18 (10.3) | 21 (7.2) | 16 (3.8) | 14 (2.3) | 86 (5.4) |
Sepsis (%)a | - | 5 (20.0) | 7 (21.2) | 11 (13.9) | 33 (16.6) | 35 (10.9) | 42 (9.5) | 37 (5.7) | 170 (9.7) |
RDS respiratory distress syndrome, BPD bronchopulmonary dysplasia, including mild, moderate and severe BPD, NEC necrotizing enterocolitis, including stage I, II and III, IVH intraventricular hemorrhage, including grade I, II, III and IV, ROP retinopathy of prematurity; including stage I, II, III, IV and V. PDA Patent ductus arteriosus
a Proportion among all infants including survivors
bMorbidity including moderate to severe BPD, severe IVH, high grade NEC, sepsis and ROP stage ≥3
cProportion among infants who survived
dProportion among infants who survived > 7 days