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Table 1 Demographic and clinical characteristics of isolated severe TBI patient cohort

From: Demographic and clinical risk factors associated with hospital mortality after isolated severe traumatic brain injury: a cohort study

  N = 41,590a
Age [mean ± SD, (range)] 61.1 ± 21.3 (18–110)
Male [n(%)] 26,604 (64.0 %)
Race [n(%)]  
 White 17,135 (41.2 %)
 African-American 2625 (6.3 %)
 Asian/PI 749 (1.8 %)
 Other 2527 (6.1 %)
 Missing 18,554 (44.6 %)
Insurance [n(%)]  
 Private 8516 (20.5 %)
 Public 21,564 (51.9 %)
 Self-pay 4427 (10.6 %)
 Other 2749 (6.6 %)
 Missing 4334 (10.4 %)
Admission systolic blood pressure [mean ± SD, (range)] 146.9 ± 29.4 (12–299)
Injury severity score [mean ± SD, (range)] 15.9 ± 6.3 (1–75)
Admission Glasgow Coma Scale (mean ± SD, range)b 12.6 ± 3.8 (3–15)
Admission heart rate [mean ± SD, (range)] 85.5 ± 20.9 (0–260)
Need for a ventilator [n(%)] 10,239 (24.6 %)
Injury mechanism [n(%)]c  
 Motor vehicle-related 3896 (9.4 %)
 Fall 29,512 (71.0 %)
 Firearm 1399 (3.4 %)
 Transport, other 973 (2.3 %)
 Struck by/against 3176 (7.6 %)
 Other, specified and classifiable 216 (0.5 %)
 Other 2421 (5.8 %)
  1. aMay not reflect denominator for all characteristics, due to missing data
  2. bTBI severity determined by head AIS score (see Methods)
  3. cSlightly greater than total because three patients had multiple codes for “primary mechanism”