Table 2.

Autoimmune disease and risk of MM in white and black US male veterans

	Whites			Blacks			Combined
	N	RR*	95% CI	N	RR*	95% CI	N	RR*	95% CI
Total autoimmune disease	256	1.14	1.00-1.31	106	1.15	0.94-1.42	362	1.15	1.02-1.28
Autoantibodies detectable	199	1.25	1.08-1.46	85	1.19	0.94-1.50	284	1.23	1.09-1.40
Systemic involvement	75	1.21	0.95-1.55	37	1.40	0.99-2.00	112	1.26	1.04-1.55
Polymyositis/dermatomyositis	3	—	—	3	—	—	6	2.29	1.03-5.09
Rheumatoid arthritis	63	1.10	0.85-1.43	31	1.34	0.91-1.98	94	1.17	0.94-1.45
Systemic lupus erythematosus	5	1.45	0.47-4.51	2	—	—	7	1.64	0.68-3.93
Systemic sclerosis	4	—	—	2	—	—	6	2.41	1.08-5.36
Organ involvement	132	1.30	1.09-1.56	51	1.07	0.80-1.43	183	1.23	1.05-1.43
Amyotrophic lateral sclerosis	6	1.25	0.52-2.99.	2	—	—	8	1.18	0.56-2.47
Autoimmune hemolytic anemia	8	3.52	1.58-7.85	3	—	—	11	2.82	1.41-5.64
Celiac disease	3	—	—	2	—	—	5	2.07	0.86-4.98
Chronic rheumatic heart disease	51	1.06	0.80-1.40	27	1.11	0.74-1.65	78	1.07	0.85-1.35
Discoid lupus erythematosus	5	1.31	0.49-3.49	3	—	—	8	1.28	0.61-2.69
Immune thrombocytopenic purpura	8	1.00	0.41-2.40	3	—	—	11	1.08	0.54-2.16
Myasthenia gravis	4	—	—	2	—	—	6	2.09	0.94-4.66
Pernicious anemia	22	2.30	1.50-3.54	5	1.68	0.70-4.05	27	2.15	1.45-3.16
Primary biliary cirrhosis	8	1.52	0.76-3.04	2	—	—	10	1.18	0.61-2.28
Autoantibodies not detectable	75	0.95	0.75-1.20	32	1.25	0.87-1.81	107	1.02	0.84-1.25
Ankylosing spondylitis	16	1.82	1.12-2.98	9	4.23	2.20-8.16	25	2.29	1.55-3.40
Hemorrhagic proctitis	18	1.21	0.73-2.01	6	0.70	0.26-1.88	24	1.05	0.67-1.65
Psoriasis	29	0.85	0.59-1.23	5	0.92	0.38-2.22	34	0.86	0.61-1.21
Sarcoidosis	0	—	—	6	1.20	0.54-2.69	6	0.92	0.42-2.07
Ulcerative colitis	7	0.81	0.39-1.71	1	—	—	8	0.78	0.39-1.56

— indicates RR and CI not calculated due to small numbers.

^*RR adjusted for visits, attained age, calendar time, and latency (combined also adjusted for race).