Table 6. Relative Risk for Health Encounters of Interest, adjusted^*.

	Cohort	Counts (%)	RR adjusted	95% CI	P-value
Obstructive Sleep Apnea Syndrome	Deployed	10 (50)	0	.	1.000
	Balad	10 (50)	0.541	0.051, 5.781	0.561
	Bagram	0	0	0, 1	0.995
	Non-deployed	10 (50)	ref
SSIC Involving Cardiovascular System	Deployed	8 (47.1)	0	.	1.000
	Balad	7 (41.2)	1.072	0.130, 8.801	0.941
	Bagram	1 (5.9)**	.	.	.
	Non-deployed	9 (52.9)	ref
SSIC Involving Respiratory System and Other Chest Symptoms	Deployed	33 (50)	0	.	1.000
	Balad	30 (45.5)	0.414	0.152, 1.127	0.048
	Bagram	3 (4.5)**	.	.	.
	Non-deployed	33 (50)	ref
Diseases of the Respiratory System	Deployed	76 (55.1)	0.723	0.271, 1.926	0.517
	Balad	61 (44.2)	0.739	0.375, 1.455	0.317
	Bagram	15 (10.9)	1.259	0.436, 3.631	0.626
	Non-deployed	62 (44.9)	ref

^*model was adjusted for: age, gender, race/ethnicity, occupation, deployment history, history of illness prior to deployment

^**For case count <5 variance was too large and results were removed