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. 2021 Feb 2;4(2):e2036065. doi: 10.1001/jamanetworkopen.2020.36065

Table 2. Frequencies of Combat Exposures by Suicide Attempt Among Study Participants Who Deployed (n = 57 841).

Combat exposure No. (%)
Without suicide attempt (n = 57 606) With suicide attempt (n = 235)
Overall
Any combat experience
No 14 162 (24.6) 46 (19.6)
Yes 43 444 (75.4) 189 (80.4)
Combat severity
No combat: 0 items 14 162 (24.6) 46 (19.6)
Low combat: 1-3 items 16 420 (28.5) 49 (20.9)
Medium combat: 4-7 items 14 544 (25.3) 61 (26.0)
High combat: 8-13 items 12 480 (21.7) 79 (33.6)
Individual combat items
Feeling in great danger of being killed 32 768 (56.9) 153 (65.1)
Being attacked or ambushed 27 699 (48.1) 147 (62.6)
Receiving small arms fire 23 948 (41.6) 120 (51.1)
Clearing/searching homes or buildings 12 044 (20.9) 70 (29.8)
Having an IED or a booby trap explode near you 15 728 (27.3) 94 (40.0)
Being wounded or injured 6476 (11.2) 37 (15.7)
Seeing dead bodies or human remains 22 419 (38.9) 119 (50.6)
Handling or uncovering human remains 10 536 (18.3) 61 (26.0)
Knowing someone seriously injured or killed 27 923 (48.5) 137 (58.3)
Seeing Americans seriously injured or killed 23 552 (40.9) 118 (50.2)
Having a member of your unit seriously injured or killed 21 816 (37.9) 111 (47.2)
Being directly responsible for the death of an enemy combatant 6931 (12.0) 44 (18.7)
Being directly responsible for the death of a noncombatant 1453 (2.5) 14 (6.0)

Abbreviation: IED, improvised explosive device.