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Table 1 Description of surviving and not surviving patients at 14 days

From: Prehospital risk factors of mortality and impaired consciousness after severe traumatic brain injury: an epidemiological study

  Total Survivors Non survivors  
  N missing N (%) N (%) N (%) P values
   N = 589 N = 430 N = 159  
Patient-related risks      
Female 0 146 (24.8) 108 (25.1) 38 (23.9) 0.761
Age (median, IQR) 0 55 (33-70) 52 (31-67) 62 (42-80) <0.0001
GCS in ED (median, IQR) 8 4 (3-14) 9 (3-14) 3 (3-4) <0.0001
Abnormal pupil reaction in ED 17 167 (29.2) 75 (18.0) 92 (59.0) <0.0001
ISS (median, IQR) 0 25 (21-34) 25 (20-32) 25 (25-38) <0.0001
HAIS 4 0 247 (41.9) 223 (51.9) 24 (15.1) <0.0001
HAIS 5   330 (56.0) 207 (48.1) 123 (77.4)  
HAIS 6   12 (2.0) 0 (0) 12 (7.6)  
Falls 0 307 (52.1) 218 (50.7) 89 (56.0) 0.495
Road traffic accidents   190 (32.3) 144 (33.5) 46 (28.9)  
Others mechanisms   92 (15.6) 68 (15.8) 24 (15.1)  
Treatable prehospital risks      
Hypotension (syst BP <90) 1 24 (4.1) 12 (2.8) 12 (7.6) 0.009
Hypoxemia 9 73 (12.6) 41 (9.6) 32 (20.8) <0.0001
Hypothermic 0 146 (24.8) 90 (20.9) 56 (35.2) <0.0001
Intervention-related risks      
Time (median, IQR) [min] 137 50 (37-72) 50 (38-75) 48 (36-65) 0.264
Direct admission 0 451 (76.6) 322 (74.9) 129 (81.1) 0.112
Indirect admission   138 (23.4) 108 (25.1) 30 (18.9)