Table 2 Descriptive statistics of study population
Variable | Level | Excluded | Dataset A | Dataset B | Dataset C | Dataset D |
|---|---|---|---|---|---|---|
Agea,b |  ≤ 55 (Young)c | 21837 (77.3) | 20120 (68.7) | 32427 (68.5) | 22334 (68.6) | 32438 ± 1.3 (68.5) |
 > 55 (Elderly) | 6342 (22.5) | 9178 (31.3) | 14914 (31.5) | 10210 (31.4) | 14919 ± 1.3 (31.5) | |
Unknown | 66 (0.2) | 0 (0) | 16 (0.0) | 0 (0) | 0 ± 0.0 (0.0) | |
Airway managementa | Yes | 1406 (5.0) | 66 (0.2) | 361 (0.8) | 73 (0.2) | 379 ± 1.5 (0.8) |
Noc | 15813 (56.0) | 29232 (99.8) | 46111 (97.4) | 32471 (99.8) | 46978 ± 1.5 (99.2) | |
Unknown | 11026 (39.0) | 0 (0) | 885 (1.9) | 0 (0) | 0 ± 0.0 (0.0) | |
AIS region: Abdomena,b | Yes | 2937 (10.4) | 2476 (8.5) | 4103 (8.7) | 2845 (8.7) | 4103 ± 0.0 (8.7) |
Noc | 25308 (89.6) | 26822 (91.5) | 43254 (91.3) | 29699 (91.3) | 43254 ± 0.0 (91.3) | |
AIS region: Externala | Yes | 5605 (19.8) | 6832 (23.3) | 12016 (25.4) | 7378 (22.7) | 12016 ± 0.0 (25.4) |
Noc | 22640 (80.2) | 22466 (76.7) | 35341 (74.6) | 25166 (77.3) | 35341 ± 0.0 (74.6) | |
AIS region: Facea,b | Yes | 4613 (16.3) | 6174 (21.1) | 9835 (20.8) | 7097 (21.8) | 9835 ± 0.0 (20.8) |
Noc | 23632 (83.7) | 23124 (78.9) | 37522 (79.2) | 25447 (78.2) | 37522 ± 0.0 (79.2) | |
AIS region: Heada,b | Yes | 8036 (28.5) | 8358 (28.5) | 13547 (28.6) | 9517 (29.2) | 13547 ± 0.0 (28.6) |
Noc | 20209 (71.5) | 20940 (71.5) | 33810 (71.4) | 23027 (70.8) | 33810 ± 0.0 (71.4) | |
AIS region: Lower extremitya,b | Yes | 6267 (22.2) | 7973 (27.2) | 12644 (26.7) | 9131 (28.1) | 12644 ± 0.0 (26.7) |
Noc | 21978 (77.8) | 21325 (72.8) | 34713 (73.3) | 23413 (71.9) | 34713 ± 0.0 (73.3) | |
AIS region: Necka,b | Yes | 922 (3.3) | 2153 (7.3) | 3111 (6.6) | 2531 (7.8) | 3111 ± 0.0 (6.6) |
Noc | 27323 (96.7) | 27145 (92.7) | 44246 (93.4) | 30013 (92.2) | 44246 ± 0.0 (93.4) | |
AIS region: Spinea,b | Yes | 5358 (19.0) | 5196 (17.7) | 8622 (18.2) | 5758 (17.7) | 8622 ± 0.0 (18.2) |
Noc | 22887 (81.0) | 24102 (82.3) | 38735 (81.8) | 26786 (82.3) | 38735 ± 0.0 (81.8) | |
AIS region: Thoraxa,b | Yes | 5963 (21.1) | 6314 (21.6) | 10587 (22.4) | 7179 (22.1) | 10587 ± 0.0 (22.4) |
Noc | 22282 (78.9) | 22984 (78.4) | 36770 (77.6) | 25365 (77.9) | 36770 ± 0.0 (77.6) | |
AIS region: Upper extremitya,b | Yes | 6004 (21.3) | 8295 (28.3) | 13241 (28.0) | 9479 (29.1) | 13241 ± 0.0 (28.0) |
Noc | 22241 (78.7) | 21003 (71.7) | 34116 (72.0) | 23065 (70.9) | 34116 ± 0.0 (72.0) | |
Cardiac arresta | Yes | 621 (2.2) | 55 (0.2) | 360 (0.8) | 59 (0.2) | 375 ± 2.4 (0.8) |
Noc | 16620 (58.8) | 29243 (99.8) | 46174 (97.5) | 32485 (99.8) | 46982 ± 2.4 (99.2) | |
Unknown | 11004 (39.0) | 0 (0) | 823 (1.7) | 0 (0) | 0 ± 0.0 (0.0) | |
Dominating type of injurya | Bluntc | 25354 (89.8) | 27207 (92.9) | 43279 (91.4) | 30057 (92.4) | 43395 ± 2.2 (91.6) |
Penetrating | 1629 (5.8) | 2091 (7.1) | 3950 (8.3) | 2487 (7.6) | 3962 ± 2.2 (8.4) | |
Unknown | 1262 (4.5) | 0 (0) | 128 (0.3) | 0 (0) | 0 ± 0.0 (0.0) | |
mGCSa,b | 6. Obeys commands/pain responsec | 12163 (43.1) | 27546 (94.0) | 38494 (81.3) | 30462 (93.6) | 43762 ± 9.2 (92.4) |
5. Localising pain | 581 (2.1) | 981 (3.3) | 1502 (3.2) | 1162 (3.6) | 1776 ± 9.6 (3.7) | |
4. Withdrawal from pain | 269 (1.0) | 312 (1.1) | 470 (1.0) | 361 (1.1) | 567 ± 10.0 (1.2) | |
3. Flexion to pain (decorticate) | 124 (0.4) | 76 (0.3) | 117 (0.2) | 94 (0.3) | 138 ± 3.0 (0.3) | |
2. Extension to pain (decerebrate) | 126 (0.4) | 61 (0.2) | 108 (0.2) | 70 (0.2) | 134 ± 3.7 (0.3) | |
1. No motor response | 970 (3.4) | 322 (1.1) | 828 (1.7) | 395 (1.2) | 981 ± 7.9 (2.1) | |
Unknown | 14012 (49.6) | 0 (0) | 5838 (12.3) | 0 (0) | 0 ± 0.0 (0.0) | |
Gendera,b | Female | 9619 (34.1) | 10701 (36.5) | 16858 (35.6) | 11787 (36.2) | 16863 ± 1.8 (35.6) |
Malec | 18591 (65.8) | 18597 (63.5) | 30487 (64.4) | 20757 (63.8) | 30494 ± 1.8 (64.4) | |
Unknown | 35 (0.1) | 0 (0) | 12 (0.0) | 0 (0) | 0 ± 0.0 (0.0) | |
Intention of injuryb | Accident | 24198 (85.7) | 26103 (89.1) | 41155 (86.9) | 28766 (88.4) | 41415 ± 7.2 (87.5) |
Self-inflicted | 935 (3.3) | 888 (3.0) | 1796 (3.8) | 1065 (3.3) | 1833 ± 5.5 (3.9) | |
Assault | 1499 (5.3) | 2258 (7.7) | 3929 (8.3) | 2659 (8.2) | 4003 ± 6.1 (8.5) | |
Otherc | 48 (0.2) | 49 (0.2) | 106 (0.2) | 54 (0.2) | 107 ± 0.7 (0.2) | |
Unknown | 1565 (5.5) | 0 (0) | 371 (0.8) | 0 (0) | 0 ± 0.0 (0.0) | |
Mechanism of injurya,b | Blunt object | 1668 (5.9) | 1821 (6.2) | 2827 (6.0) | 2045 (6.3) | 2846 ± 6.0 (6.0) |
Explosion | 104 (0.4) | 49 (0.2) | 97 (0.2) | 63 (0.2) | 98 ± 0.9 (0.2) | |
High energy fall > 3 m | 6604 (23.4) | 5449 (18.6) | 8920 (18.8) | 6084 (18.7) | 8947 ± 4.2 (18.9) | |
Low energy fall < 3 m | 2451 (8.7) | 3703 (12.6) | 5860 (12.4) | 4135 (12.7) | 5897 ± 6.5 (12.5) | |
Otherc | 1651 (5.8) | 518 (1.8) | 1093 (2.3) | 564 (1.7) | 1095 ± 1.4 (2.3) | |
Shot | 413 (1.5) | 324 (1.1) | 644 (1.4) | 385 (1.2) | 646 ± 0.8 (1.4) | |
Stab | 1023 (3.6) | 1649 (5.6) | 3106 (6.6) | 1982 (6.1) | 3117 ± 3.2 (6.6) | |
Traffic—Bicycle injury | 2022 (7.2) | 2565 (8.8) | 3942 (8.3) | 2831 (8.7) | 3955 ± 1.6 (8.4) | |
Traffic—Motor vehicle injury | 7266 (25.7) | 9478 (32.4) | 14663 (31.0) | 10251 (31.5) | 14690 ± 4.9 (31.0) | |
Traffic—Motorcycle injury | 2368 (8.4) | 2448 (8.4) | 3873 (8.2) | 2721 (8.4) | 3885 ± 1.6 (8.2) | |
Traffic—Pedestrian | 845 (3.0) | 903 (3.1) | 1460 (3.1) | 1042 (3.2) | 1467 ± 2.7 (3.1) | |
Traffic—Other | 483 (1.7) | 391 (1.3) | 711 (1.5) | 441 (1.4) | 713 ± 1.0 (1.5) | |
Unknown | 1347 (4.8) | 0 (0) | 161 (0.3) | 0 (0) | 0 ± 0.0 (0.0) | |
Respiratory ratea,b | RTS 0: 0 | 54 (0.2) | 18 (0.1) | 31 (0.1) | 19 (0.1) | 58 ± 3.0 (0.1) |
RTS 1: 1–5 | 23 (0.1) | 17 (0.1) | 35 (0.1) | 19 (0.1) | 45 ± 2.1 (0.1) | |
RTS 2: 6–9 | 70 (0.2) | 51 (0.2) | 91 (0.2) | 60 (0.2) | 104 ± 1.4 (0.2) | |
RTS 3: > 29 | 1206 (4.3) | 1403 (4.8) | 2204 (4.7) | 1706 (5.2) | 2526 ± 16.9 (5.3) | |
RTS 4: 10-29c | 12973 (45.9) | 27809 (94.9) | 40115 (84.7) | 30740 (94.5) | 44625 ± 17.4 (94.2) | |
Unknown | 13919 (49.3) | 0 (0) | 4881 (10.3) | 0 (0) | 0 ± 0.0 (0.0) | |
Response timea |  < 8 minc | 4249 (15.0) | 7515 (25.7) | 12038 (25.4) | 8520 (26.2) | 12270 ± 8.0 (25.9) |
 ≥ 8 min | 12894 (45.7) | 21783 (74.3) | 34441 (72.7) | 24024 (73.8) | 35087 ± 8.0 (74.1) | |
Unknown | 11102 (39.3) | 0 (0) | 878 (1.9) | 0 (0) | 0 ± 0.0 (0.0) | |
Season of yeara | Winterc | 6177 (21.9) | 6273 (21.4) | 10273 (21.7) | 7030 (21.6) | 10276 ± 1.0 (21.7) |
Spring | 7028 (24.9) | 6894 (23.5) | 11381 (24.0) | 7734 (23.8) | 11384 ± 1.1 (24.0) | |
Summer | 8310 (29.4) | 8585 (29.3) | 13881 (29.3) | 9455 (29.1) | 13884 ± 1.4 (29.3) | |
Autumn | 6701 (23.7) | 7546 (25.8) | 11811 (24.9) | 8325 (25.6) | 11813 ± 0.7 (24.9) | |
Unknown | 29 (0.1) | 0 (0) | 11 (0.0) | 0 (0) | 0 ± 0.0 (0.0) | |
Systolic blood pressurea,b | RTS 0: 0 | 196 (0.7) | 17 (0.1) | 36 (0.1) | 19 (0.1) | 129 ± 11.0 (0.3) |
RTS 1: 1–49 | 16 (0.1) | 31 (0.1) | 41 (0.1) | 33 (0.1) | 46 ± 1.9 (0.1) | |
RTS 2: 50–75 | 116 (0.4) | 168 (0.6) | 271 (0.6) | 213 (0.7) | 316 ± 3.2 (0.7) | |
RTS 3: 76–89 | 243 (0.9) | 327 (1.1) | 530 (1.1) | 378 (1.2) | 600 ± 4.0 (1.3) | |
RTS 4: > 89c | 13310 (47.1) | 28755 (98.1) | 42246 (89.2) | 31901 (98.0) | 46266 ± 12.5 (97.7) | |
Unknown | 14364 (50.9) | 0 (0) | 4233 (8.9) | 0 (0) | 0 ± 0.0 (0.0) |