Table 3.

Risk of hospitalization overall and by disease/disorder.

	First 12 months				Years 1–7				Years 8–14
	Exposed	Unexposed	aRR*	95% CI	Exposed	Unexposed	aRR*	95% CI	Exposed	Unexposed	aRR*	95% CI
	(n = 50,254)	(n = 50,254)			(n = 44,520)	(n = 45,937)			(n = 6,791)	(n = 7,725)
	%	%			%	%			%	%
Any disease/disorder	3.73	3.63	1.01	0.96–1.05	9.11	9.00	1.01	0.97–1.04	4.46	4.58	1.02	0.91–1.15
Specific disorder
Headache	0.05	0.09	0.77	0.53–1.13	0.23	0.25	0.96	0.80–1.17	0.34	0.35	1.00	0.66–1.51
Sleep disturbance	0.02	0.04	0.65	0.33–1.24	0.23	0.26	0.92	0.76–1.11	0.19	0.23	0.89	0.52–1.54
Tinnitus	<0.01	0	1.83	0.36–13.02	0.02	0.01	1.25	0.65–2.40	0.04	0.01	1.42	0.46–4.39
TBI	0.08	0.05	1.23	0.90–1.66	0.32	0.17	1.32	1.12–1.55	0.16	0.03	1.85	1.02–3.34
Disease/disorder subcategory
Respiratory	0.78	0.95	0.89	0.81–0.99	1.13	1.20	0.99	0.90–1.08	0.68	0.76	1.02	0.76–1.36
Nervous system/sense organs	0.23	0.22	0.99	0.83–1.19	1.32	1.13	1.07	0.99–1.16	1.24	1.20	1.03	0.83–1.28
Psychiatric	1.27	1.22	1.01	0.93–1.09	4.13	4.30	0.98	0.94–1.03	2.46	2.61	0.99	0.85–1.15
Endocrine, nutritional, immunity	0.22	0.21	1.02	0.85–1.23	0.77	0.72	1.03	0.92–1.14	0.59	0.61	1.06	0.77–1.45
Circulatory	0.25	0.21	1.10	0.93–1.32	0.95	1.04	0.99	0.90–1.09	0.88	0.91	1.00	0.76–1.31
Digestive	0.61	0.69	0.93	0.83–1.04	1.95	2.13	0.95	0.89–1.02	1.28	1.26	1.03	0.83–1.27
Symptoms/Ill-defined conditions	0.55	0.62	0.94	0.84–1.06	1.66	1.80	0.97	0.90–1.04	1.19	1.09	1.10	0.89–1.38
Injury/poisonings	1.18	0.78	1.19	1.10–1.29	3.76	2.76	1.15	1.09–1.20	1.27	0.85	1.23	0.99–1.52

^*Adjusted models control for race and education at military entry.