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Table 1 Characteristics of national trauma registry patients aged over 18 (n = 11,398)a

From: Combining the new injury severity score with an anatomical polytrauma injury variable predicts mortality better than the new injury severity score and the injury severity score: a retrospective cohort study

  All Age 18–44 Age 45–54 Age 55–64 Age 65–69 Age 70–74 Age 75–84 Age 85 and above
Study Population 11,398 3366 1260 1851 755 850 1982 1334
Male 7149 (62.7) 2788 (82.8) 1013 (80.4) 1223 (66.1) 442 (58.5) 444 (52.2) 836 (42.2) 403 (30.2)
Age mean (SD) 58.4 (21.6) 30.7 (7.5) 49.7 (2.9) 59.9 (2.9) 66.8 (1.5) 72.1 (1.4) 79.5 (2.9) 89.6 (3.9)
NISS mean (SD) 19.6 (12.8) 21.1 (12.5) 20.2 (12.7) 18.7 (13.1) 19.5 (13.3) 19.2 (12.9) 18.6 (13.0) 18.3 (12.5)
ISS mean (SD) 14.8 (8.1) 16.0 (9.3) 15.0 (8.3) 14.1 (8.0) 14.4 (7.8) 14.2 (7.3) 14.0 (7.0) 14.0 (6.7)
Polytrauma (Anatomical Definition) 1114 (9.8) 534 (15.9) 155 (12.3) 157 (8.5) 47 (6.2) 44 (5.2) 98 (4.9) 79 (5.9)
Polytrauma (Anatomical and one of: Systolic Blood Pressure (SBP) ≤ 90 mmHg or Glasgow Coma Scale (GCS) ≤ 8 or age 70 and above) 1073 (9.4) 512 (15.2) 142 (11.3) 151 (8.2) 47 (6.2) 44 (5.2) 98 (4.9) 79 (5.9)
Revised Trauma Score (RTS) mean (SD) 7.6 (0.9) 7.4 (1.1) 7.5 (1.0) 7.6 (0.8) 7.6 (0.7) 7.6 (0.8) 7.6 (0.6) 7.7 (0.6)
Systolic Blood Pressure (SBP) ≤ 90 mmHg 266 (2.3) 130 (3.9) 46 (3.7) 42 (2.3) 9 (1.2) 8 (0.9) 17 (0.9) 14 (1.0)
Glasgow Coma Scale (GCS) ≤ 8 758 (6.7) 311 (9.2) 102 (8.1) 119 (6.4) 36 (4.8) 44 (5.2) 85 (4.3) 61 (4.6)
Abbreviated Injury Score of 3 or moreb  
Head and Neck 4975 (43.6) 1280 (38.0) 512 (40.6) 741 (40.0) 375 (49.7) 447 (52.6) 964 (48.6) 656 (49.2)
Face 94 (0.8) 62 (1.8) 10 (0.8) 12 (0.6) 5 (0.7) 2 (0.2) 3 (0.2) 0 (0.0)
Thoracic 2135 (18.7) 817 (24.3) 343 (24.2) 361 (19.5) 113 (15.0) 108 (12.7) 250 (12.6) 143 (10.7)
Abdominal 940 (8.2) 369 (11.0) 117 (9.3) 114 (6.2) 49 (6.5) 50 (5.9) 137 (6.9) 104 (7.8)
Extremity 3990 (35.0) 1183 (35.1) 395 (31.3) 749 (40.5) 240 (31.8) 265 (31.2) 689 (34.8) 469 (35.2)
External 10 (0.1) 7 (0.2) 1 (0.1) 2 (0.1) 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0)
Charlson Comorbidity Index (CCI)  
CCI 0 8285 (72.7) 3074 (91.3) 1053 (83.6) 1391 (75.1) 488 (64.4) 518 (60.9) 1061 (53.5) 700 (52.5)
CCI 1 1978 (17.4) 208 (6.2) 130 (10.3) 296 (16.0) 174 (23.0) 212 (24.9) 586 (29.6) 372 (27.9)
CCI 2 664 (5.8) 11 (0.3) 30 (2.4) 97 (5.2) 55 (7.3) 73 (8.6) 215 (10.8) 183 (13.7)
CCI 3 223 (2.0) 2 (0.1) 13 (1.0) 43 (2.3) 18 (2.4) 26 (3.1) 77 (3.9) 44 (3.3)
CCI of 4 and above 104 (0.9) 3 (0.1) 2 (0.2) 10 (0.5) 13 (1.7) 12 (1.4) 33 (1.7) 31 (2.3)
30-day Mortality 783 (6.9) 164 (4.9) 67 (5.3) 103 (5.6) 49 (6.5) 58 (6.8) 183 (9.2) 159 (11.9)
In-Hospital Mortality 167 (5.0) 72 (5.7) 116 (6.3) 54 (7.2) 62 (7.3) 183 (9.2) 149 (11.2) 803 (7.0)
Mechanism of Injury  
Motor Vehicle Injuries 3372 (29.6) 1,828 (54.3) 533 (42.3) 545 (29.4) 163 (21.6) 146 (17.2) 130 (6.6) 27 (2.0)
Falls 7166 (62.9) 1,023 (30.4) 595 (47.2) 1,194 (64.5) 562 (74.4) 674 (79.3) 1,824 (92.0) 1,294 (97.0)
Assault 212 (1.9) 132 (3.9) 36 (2.9) 22 (1.2) 7 (0.9) 8 (0.9) 7 (0.4) 0 (0.0)
Others 648 (5.7) 383 (11.4) 96 (7.6) 90 (4.9) 23 (3.1) 22 (2.6) 21 (1.1) 13 (1.0)
  1. aPercentages in brackets (%) unless otherwise noted. SD = standard deviation
  2. b% of study population, not adding up to 100 % due to patients with polytrauma