Table 4. Adjusted odds ratios for trouble sleeping stratified by occupational specialization.
| Model | General Purpose Forces | Ranger Qualified infantrymen | Special Forces personnel |
|---|---|---|---|
| n = 5,309 | n = 306 | n = 586 | |
| AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | |
| Model 1: Combat severitya | |||
| Low (0–6 items) | 1.00 | 1.00 | 1.00 |
| High (7–12 items) | 2.26 (2.00, 2.55) | 0.98 (0.54, 1.77) | 1.57 (1.05, 2.35) |
| Model 2: Type of combat eventb | |||
| Threat to oneselfc | |||
| No | 1.00 | 1.00 | 1.00 |
| Yes | 1.38 (1.19, 1.60) | 0.64 (0.33, 1.26) | 0.99 (0.63, 1.54) |
| Model 3: Type of killingd,e | |||
| Neither | 0.61 (0.53, 0.70) | 0.81 (0.43, 1.55) | 0.46 (0.29, 0.73) |
| Enemy combatant only | 1.00 | 1.00 | 1.00 |
| Noncombatant | 1.76 (1.41, 2.21) | 0.78 (0.29, 2.08) | 3.21 (1.40, 7.38) |
AOR, adjusted odds ratio; CI, confidence interval; IED, improvised explosive device.
Significant results are shown in bold.
a Model 1 was adjusted for race and ethnicity, marital status, education, age, panel, component, and rank. A separate model was run for each occupational specialization.
b Model 2 was adjusted for the other types of combat events (fighting, killing, and death/injury of others), race and ethnicity, marital status, education, age, panel, component and rank. A separate model was run for each occupational specialization.
c Threat to oneself includes having an IED explode near you or being wounded or injured.
d Type of killing was categorized as “neither,” “enemy combatant only,” and “noncombatant.” Almost all who reported being responsible for the death of a noncombatant also reported being responsible for the death of an enemy combatant.
e Model 3 was adjusted for fighting, threat to oneself, death/injury of others, race and ethnicity, marital status, education, age, panel, component, and rank. A separate model was run for each occupational specialization.