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

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

		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
Sex	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

*Junior non-commissioned member (NCM) includes rank of Master Corporal (or equivalent) or below.
^†Senior non-commissioned member (NCM) includes rank of Sergeant (or equivalent) or above.
^†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 + .

ISSN: 1471-244X