Table 5.

Risk of an ambulatory encounter 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	98.95	99.10	0.92	0.84–1.00	95.37	96.36	0.87	0.83–0.91	66.04	69.73	0.89	0.89–1.00
Specific disorder
Headache	5.23	6.66	0.90	0.86–0.93	11.20	14.69	0.87	0.85–0.90	10.19	11.57	0.98	0.90–1.06
Sleep disturbance	1.23	1.53	0.88	0.81–0.95	14.42	16.84	0.91	0.89–0.94	14.86	17.02	0.95	0.89–1.02
Tinnitus	0.39	0.24	1.19	1.03–1.37	5.38	3.33	1.21	1.16–1.26	5.71	3.20	1.31	1.18–1.45
TBI	1.11	0.91	1.09	1.00–1.18	7.63	5.65	1.15	1.11–1.19	7.17	4.92	1.23	1.12–1.35
Disease/disorder subcategory
Respiratory	50.34	52.40	0.96	0.94–0.97	40.04	49.51	0.82	0.81–0.84	25.36	33.79	0.82	0.77–0.87
Nervous system/sense organs	47.62	51.72	0.92	0.90–0.93	57.25	61.92	0.90	0.88–0.92	38.43	43.63	0.93	0.88–0.98
Psychiatric	18.65	20.80	0.92	0.90–0.94	49.66	52.69	0.94	0.93–0.96	35.05	37.80	0.97	0.92–1.02
Endocrine, nutritional, immunity	6.25	7.04	0.93	0.90–0.97	19.33	25.53	0.82	0.80–0.84	16.35	22.20	0.83	0.78–0.89
Circulatory	9.99	6.57	1.21	1.18–1.25	18.45	23.06	0.88	0.85–0.90	16.05	20.28	0.90	0.84–0.96
Digestive	17.23	20.93	0.89	0.87–0.91	32.00	42.55	0.79	0.78–0.81	19.76	25.22	0.87	0.82–0.93
Symptoms/Ill-defined conditions	30.65	36.20	0.88	0.88–0.91	55.81	63.56	0.86	0.85–0.88	39.36	44.88	0.92	0.88–0.97
Injury/poisonings	40.49	40.58	1.00	0.98–1.02	55.86	61.71	0.89	0.87–0.91	31.06	35.02	0.94	0.89–0.99

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