Variable | LO-NEC | non-LO-NEC | χ2/Z | P | |
---|---|---|---|---|---|
LO-NEC occurring between 8 ~ 14d | LO-NEC occurring after 14d | ||||
(n = 128) | (n = 84) | (n = 2297) | |||
GA, [M(Q1,Q3)], weeks | 29.8 (28.5,30.7)a | 30.0 (28.8,30.9) | 30.1 (28.9,31.1) | 3.670 | 0.026 |
BW, [M(Q1,Q3)], grams | 1285 (1120,1490) | 1260 (1092,1450)a | 1340 (1130,1550) | 6.841 | 0.001 |
Cesarean section, n(%) | 79 (61.7) | 52 (62.0) | 1402 (61.0) | 0.047 | 0.977 |
Multiple gestation, n(%) | 44 (34.3) | 19(22.6) | 758 (33.0) | 4.134 | 0.127 |
Male gender, n(%) | 67 (52.3) | 37(44.0) | 1271 (55.3) | 4.496 | 0.106 |
Gestational diabetes mellitus, n(%) | 26 (20.3) | 16 (19.0) | 389 (16.9) | 1.186 | 0.553 |
HDCP, n(%) | 24 (18.7) | 23(27.3) | 463 (20.2) | 2.819 | 0.244 |
Full-course antenatal steroidsc, n(%) | 64 (50.0) | 41 (48.8) | 1118 (48.7) | 0.086 | 0.958 |
Fetal distress, n(%) | 12 (9.3) | 4(4.7) | 205 (8.9) | 1.802 | 0.406 |
Apgar score ≤ 7 at 5 min, n(%) | 16 (12.5) | 15(17.8) | 277 (12.1) | 2.536 | 0.281 |
SGA, n(%) | 8 (6.3) | 5 (5.9) | 119 (5.2) | 0.361 | 0.835 |
Anemiad, n(%) | 121 (94.5)a | 78 (92.8)a | 1912 (83.2) | 16.535 | < 0.001 |
Grade III-IV NRDSe, n(%) | 24 (18.8) | 14 (16.7) | 336 (14.6) | 1.837 | 0.399 |
EOS, n(%) | 20 (15.6) | 13 (15.5) | 336 (14.6) | 0.137 | 0.934 |
hsPDA, n(%) | 23 (17.9) | 16 (19.0) | 392 (17.1) | 0.283 | 0.868 |
Blood transfusiond, n(%) | 99 (77.3)a | 68 (80.9)a | 1319 (57.4) | 36.912 | < 0.001 |
Antibioticsd, n(%) | 126 (98.4) | 81 (96.4) | 2185 (95.2) | 3.096 | 0.213 |
Duration of antibioticsd, [M(Q1,Q3)], days | 19.0 (13.0, 28.0)a | 27.0 (17.0, 34.0)a,b | 11.0 (8.0, 19.0) | 79.752 | < 0.001 |
IMVd, n(%) | 79 (61.7)a,b | 48 (57.1) | 1101 (47.9) | 11.560 | 0.003 |
Postnatal corticosteroid used, n(%) | 23 (18.0) | 15 (17.8) | 315 (13.7) | 3.300 | 0.770 |