Table 4 Survival to discharge for infants born at GA 24–36 weeks in 15 hospitals in China January 1, 2013-December 31, 2014.
No./Total(%) | 24–27 weeks (n = 148) | 28–31 weeks (n = 1612) | 32–33 weeks (n = 2460) | 34–36 weeks (n = 9481) | Total (N = 13701) | χ2 | p |
|---|---|---|---|---|---|---|---|
Died | 47 (31.8) | 108 (6.7) | 45 (1.8) | 56 (0.6) | 256 (1.9) | 1010.711 | 0.000 |
Survived to dischargea | 101 (68.2) | 1504 (93.3) | 2415 (99.2) | 9425 (99.4) | 13445 (98.1) | 1010.711 | 0.000 |
Survived to discharge without major morbidityb | 64 (63.4) | 1246 (82.8) | 2227 (92.2) | 9137 (96.9) | 12674 (94.3) | 685.124 | 0.000 |
RDSa | 131 (88.5) | 900 (55.8) | 603 (24.5) | 512 (5.4) | 2146 (15.7) | 3465.331 | 0.000 |
RDS stage III+a | 50 (33.8) | 178 (11.0) | 115 (4.7) | 81 (0.9) | 424 (3.1) | 3688.745 | 0.000 |
BPDc | 29 (19.6) | 165 (10.2) | 37 (1.5) | 54 (0.6) | 285 (2.1) | 859.508 | 0.000 |
Moderate/severe BPDc | 15 (10.1) | 83 (5.1) | 21 (0.8) | 48 (0.5) | 167 (1.3) | 898.967 | 0.000 |
ICHc | 33 (22.3) | 227 (14.1) | 293 (11.9) | 639 (6.7) | 1192 (8.7) | 171.016 | 0.000 |
Severe IVHc | 6 (4.1) | 10 (0.6) | 7 (0.3) | 8 (0.1) | 31 (0.2) | 260.424 | 0.000 |
cystic PVLc | 1e | 13 (0.8) | 1e | 3e | 18 (0.1) | —d | 0.000 |
NECc | 8 (5.4) | 57 (3.5) | 45 (1.8) | 60 (0.6) | 170 (1.2) | 125.795 | 0.000 |
NEC stage IIIc | 1e | 5e | 1e | 1e | 8e | —d | 0.169 |
ROPc | 17 (11.5) | 69 (4.3) | 20 (0.8) | 38 (0.4) | 144 (1.1) | 356.511 | 0.000 |
ROP stage III+c | 3e | 9e | 2e | 7e | 21 (1.5) | —d | 0.790 |
Sepsisa | 20 (13.5) | 147 (9.1) | 114 (4.6) | 131 (1.4) | 412 (3.0) | 370.685 | 0.000 |
