Table 1 Characteristics of normothermic and hypothermic VLBW infants
|  | Moderate/severe hypothermia n = 546 | Mild hypothermia n = 554 | Normothermia n = 147 | P* |
|---|---|---|---|---|
GA [weeks, M (Q1,Q3)] | 29 (28, 31) | 30 (28, 31) | 30 (28, 31) | 0.048 |
BW [g, M (Q1,Q3)] | 1230 (1050, 1370) | 1280 (1100, 1400) | 1280 (1130, 1430) | 0.001 |
SGA | 144 (26.4) | 127 (22.9) | 23 (15.6) | 0.022 |
Sex (boy) | 287 (52.6) | 282 (50.9) | 80 (54.4) | 0.711 |
Caesarean section | 425 (77.8) | 398 (71.8) | 73 (49.7) | < 0.001 |
Multiple birth (twins or more) | 104 (19.0) | 111 (20.0) | 22 (14.9) | 0.379 |
Antenatal use of full course of steroid | 270 (49.5) | 234 (42.2) | 43 (29.3) | < 0.001 |
Apgar score at 1 min < 7 | 212 (38.9) | 193 (34.8) | 42 (28.6) | 0.057 |
Apgar score at 5 min < 7 | 208 (38.1) | 148 (26.7) | 16 (10.9) | < 0.001 |
Intubation at DR | 215 (39.4) | 157 (28.3) | 15 (10.2) | < 0.001 |
Maternal hypertension | 248 (45.4) | 227 (40.9) | 41 (27.9) | 0.001 |
GDM | 64 (11.7) | 65 (11.7) | 18 (12.2) | 0.983 |
PROM | 236 (43.2) | 193 (34.8) | 52 (35.4) | 0.023 |
Death | 93 (17.0) | 40 (7.2) | 5 (3.4) | < 0.001 |
RDS | 453 (82.9) | 404 (72.9) | 70 (47.6) | < 0.001 |
BPD | 77 (14.1) | 75 (13.5) | 18 (12.2) | 0.191 |
IVH | 86 (15.7) | 35 (6.3) | 4 (2.7) | < 0.001 |
NEC | 31 (5.6) | 17 (3.1) | 5 (3.4) | 0.087 |
LOS | 198 (36.3) | 170 (30.7) | 32 (21.7) | 0.002 |
ROP | 44 (8.1) | 42 (7.6) | 13 (8.8) | 0.873 |
EUGR | 301 (55.1) | 271 (48.9) | 63 (42.8) | 0.014 |