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Table 1 Military and socio-demographic characteristics (Overall N =16153)

From: Deployment-related mild traumatic brain injury, mental health problems, and post-concussive symptoms in Canadian armed forces personnel

   N %
Age 24 years or less 3134 19.42
25 - 34 years 7075 43.84
35-44 years 4049 25.09
45 or more 1882 11.66
Total 16140  
Sex Male 14641 90.67
Female 1507 9.33
  Total 16148  
Rank Junior NCM* 10940 67.81
Senior NCM 2863 17.75
Officer 2331 14.45
Total 16134  
Component Regular 13812 85.52
Reserve 2339 14.48
Total 16151  
Element Land 12824 79.54
Sea 959 5.95
Air 2340 14.51
Total 16123  
Language English 11828 73.50
French 4185 26.00
Other 79 0.50
Total 16092  
Years of military service 5 or less 5236 32.42
6 to 15 6240 38.64
16 or more 4675 28.95
Total 16151  
Number previous deployments 0 7516 46.96
1-2 5025 31.40
3 or more 3464 21.64
Total 16005  
Combat exposure (tertiles) 1st Tertile 4535 28.71
2nd Tertile 6397 40.08
3rd Tertile 5029 31.51
  15961  
Injury status Uninjured 12602 78.02
  Non-TBI injury 2708 16.76
Less severe mTBI 521 3.23
More severe mTBI 322 1.99
Total 16153  
Major depression No 15560 96.33
Yes 593 3.67
Total 16153  
PTSD No 15233 94.30
Yes 920 5.70
Total 16153  
Panic disorder No 14747 98.06
Yes 291 1.94
Total 15038  
Any MHP No 14058 91.20
Yes 1356 8.80
Total 15414  
  1. *Junior non-commissioned member (NCM) includes rank of Master Corporal (or equivalent) or below.
  2. Senior non-commissioned member (NCM) includes rank of Sergeant (or equivalent) or above.
  3. Tertiles are computed relative to a larger reference population, which accounts for the uneven distribution of cases. The cut-off used were: 0-2; 3-10; 11 + .