| NICU-1 (N = 206/year) | NICU-2 (N = 122/year) | NICU-3 (N = 111/year) | NICU--4 (N = 82/year) | NICU-5 (N = 61/year) | p-Value |
---|---|---|---|---|---|---|
Baseline characteristics | ||||||
Age, median (IQR) | 58 (46-68) | 58 (45-70) | 59 (49-69) | 53 (35-65) | 59 (44-67) | <0.001 |
 < 45 | 191 (23) | 122 (25) | 82 (18) | 108 (33) | 63 (26) | 0.001 |
 45-75 | 517 (63) | 285 (58) | 293 (66) | 183 (56) | 148 (61) |  |
 > 75 | 117 (14) | 82 (17) | 70 (16) | 36 (11) | 31 (13) |  |
Severe co-morbidities* | 55 (7) | 37 (8) | 45 (10) | 35 (11) | 14 (6) | 0.046 |
GCS, median (IQR) | 10 (6-13) | 11 (6-14) | 11 (7-14) | 8 (3-14) | 9 (5-13) | <0.001 |
 3-8 | 351 (43) | 178 (36) | 156 (35) | 166 (51) | 118 (49) | <0.001 |
 9-12 | 198 (24) | 97 (20) | 104 (23) | 52 (16) | 56 (23) |  |
 13-15 | 276 (34) | 214 (44) | 185 (42) | 109 (33) | 68 (28) |  |
Operative admission | 308 (37) | 169 (35) | 127 (29) | 136 (42) | 91 (38) | 0.002 |
Marshall CT | Â | Â | Â | Â | Â | Â |
 DI I | 9 (1) | 48 (10) | 24 (5) | 40 (12) | 21 (9) | <0.001 |
 DI II | 229 (27) | 175 (36) | 158 (36) | 112 (34) | 85 (35) |  |
 DI III | 32 (4) | 45 (9) | 42 (9) | 33 (10) | 17 (7) |  |
 DI IV | 30 (4) | 7 (1) | 3 (1) | 5 (2) | 1 (0) |  |
 EML or NEML | 525 (64) | 214 (44) | 218 (49) | 137 (42) | 118 (49) | <0.001 |
APACHE II, median | 15 (11-19) | 16 (10-23) | 16 (10-23) | 19 (12-25) | 19 (12-24) | <0.001 |
Treatment variables | ||||||
Mechanically ventilated | 668 (81) | 256 (52) | 231 (52) | 239 (73) | 207 (86) | <0.001 |
ICP monitored | 138 (17) | 74 (15) | 83 (19) | 117 (36) | 60 (25) | <0.001 |
Lowest MAP, mmHg†| 59 (50-67) | 70 (64-78) | 66 (59-75) | 67 (60-74) | 66 (60-72) | <0.001 |
Lowest PaO2, kPa‡ | 14.4 (11.4-19.5) | 11.3 (9.7-13.2) | 12.4 (10.2-16.2) | 12.6 (10.3-15.6) | 13.2 (10.7-16.7) | <0.001 |
Length of stay (days) | Â | Â | Â | Â | Â | Â |
 Intensive care unit | 2.3 (1.0-6.0) | 1.4 (1.0-3.1) | 1.2 (0.9-2.4) | 2.0 (1.0-5.0) | 2.9 (1.4-6.2) | <0.001 |
 Hospital | 8.0 (4.0-14.0) | 5.0 (2.0-13.0) | 4.0 (3.0-7.0) | 7.0 (4.0-12.0) | 8.0 (4.0-13.0) | <0.001 |
TISS-76§ |  |  |  |  |  |  |
 Mean score | 32 (26-37) | 25 (21-31) | 22 (17-30) | 28 (21-35) | 31 (25-35) | <0.001 |
 Total score | 106 (50-259) | 61 (40-121) | 50 (31-79) | 82 (41-219) | 120 (57-249) | <0.001 |
Observed mortality | ||||||
 30-day | 139 (17) | 84 (17) | 76 (17) | 49 (15) | 59 (24) | 0.046 |
 6-month | 195 (24) | 108 (22) | 92 (21) | 58 (18) | 66 (27) | 0.063 |
Mean (SD) predicted risk for death¶ | ||||||
 30-day | 16.8 (17.4) | 17.2 (20.8) | 17.1 (19.3) | 15.0 (17.1) | 24.4 (22.6) | <0.001 |
 6-month | 23.6 (20.9) | 22.1 (23.5) | 20.7 (21.4) | 17.7 (19.4) | 27.3 (23.7) | <0.001 |