Table 2.
Comparison of mortality, morbidity, and survival without major morbidities rate between the two groups.
| (%) | GA 23–24 W | n = 720 | p-value | GA 25–26 W | n = 1,363 | p-value | GA 23–26 W | n = 2,083 | p-value |
|---|---|---|---|---|---|---|---|---|---|
| Group 1 (n = 398) |
Group 2 (n = 322) |
Group 1 (n = 676) |
Group 2 (n = 687) |
Group 1 (n = 1,074) |
Group 2 (n = 1,009) |
||||
| Mortality* | 130 (32.7) | 225 (69.9) | <0.001 | 105 (15.5) | 211 (30.7) | <0.001 | 235 (21.9) | 436 (43.2) | <0.001 |
| SWMM | 19 (7.1) | 8 (8.2) | 0.709 | 178 (31.2) | 88 (18.5) | <0.001 | 197 (23.5) | 96 (16.8) | 0.002 |
| BPD | 194 (72.4) | 70 (72.2) | 0.966 | 269 (47.1) | 301 (63.2) | <0.001 | 463 (55.2) | 371 (64.7) | <0.001 |
| IVH | 64 (23.9) | 29 (29.9) | 0.245 | 62 (10.9) | 66 (13.9) | 0.140 | 126 (15.0) | 95 (16.6) | 0.428 |
| PVL | 45 (16.8) | 9 (9.3) | 0.078 | 52 (9.1) | 68 (14.3) | 0.009 | 97 (11.6) | 77 (13.4) | 0.293 |
| NEC | 48 (17.9) | 11 (11.3) | 0.132 | 62 (10.9) | 66 (13.9) | 0.139 | 93 (11.1) | 59 (10.3) | 0.639 |
| ROP | 163 (60.8) | 54 (55.7) | 0.064 | 190 (33.3) | 146 (30.7) | 0.208 | 353 (42.1) | 200 (34.9) | 0.001 |
| LOS | 84 (31.3) | 45 (46.4) | 0.008 | 125 (21.9) | 157 (33.0) | <0.001 | 209 (24.9) | 202 (35.3) | <0.001 |
SWMM, survival without major morbidities at discharge; BPD, bronchopulmonary dysplasia ≥ moderate; GA, gestational age; IVH, intraventricular haemorrhage grade 3 or 4; LOS, late-onset neonatal sepsis; NEC, necrotizing enterocolitis stage ≥2; PVL, periventricular leukomalacia; ROP, retinopathy of prematurity stage ≥3; W: weeks.
*Percentages for morbidities refer to survival.