Table 3.

Adjusted odds ratios and 95% confidence intervals measuring associations between predictor variables and high risk behaviors

	Tobacco abuse	Alcohol abuse	Suicide risk
Very short sleep duration (< 6 h nightly)	1.5 (1.2-1.9)	1.9 (1.5-2.4)	3.8 (1.5-9.2)
Short sleep duration (6 h nightly)	1.2 (1.0-1.5)	1.1 (0.9-1.4)	2.3 (0.9-6.0)
Symptoms of insufficient sleep	1.0 (0.8-1.2)	1.2 (1.0-1.5)	2.4 (1.4-4.1)
Age	0.96 (0.95-0.98)	0.92 (0.90-0.94)	1.05 (1.00-1.11)
Female	0.4 (0.3-0.7)	0.3 (0.2-0.7)	0.5 (0.1-3.6)
Junior enlisted (E1-E4)*	1.2 (1.0-1.4)	1.0 (0.8-1.3)	3.0 (1.6-5.6)
Commissioned or warrant officers*	0.3 (0.2-0.4)	0.2 (0.1-0.4)	—
Personally killed during combat operations	1.3 (1.0-1.6)	1.2 (1.0-1.5)	2.2 (1.1-4.3)
Saw dead bodies during combat operations	1.1 (0.8-1.3)	1.0 (0.8-1.3)	1.2 (0.6-2.5)
Personally witnessed someone die during combat operations	1.4 (1.1-1.8)	1.4 (1.1-1.8)	0.5 (0.2-1.0)
Personally wounded or injured during combat operations	1.0 (0.8-1.2)	0.8 (0.7-1.1)	0.7 (0.4-1.4)

^*Compared to senior enlisted (E5-E9).