Microscopic colitis: A large retrospective analysis from a health maintenance organization experience

Table 2 Comparison of concurrent diseases between collagenous colitis and the control group

Disease	Number of patients affected	Percentage (%)	Compared to control group
Hyperlipidemia	73	43.5	NS
Diabetes type I and II	24	15.8	NS
Thyroid diseases1	36	21	P < 0.001
Rheumatoid arthritis	12	7	P < 0.001
Fibromyalgia	6	3.51	NS
Raynaud/CREST syndrome	5	2.92	P < 0.01
Giant cell/temporal arteritis	3	1.75	NS
Polymyalgia rheumatica	2	1.16	NS
SLE	1	0.58	NS
Scleroderma	1	0.58	NS
Celiac disease	5	2.92	P < 0.010
IBS	30	17.5	P < 0.001
IBD	1	0.58	NS

¹Thyroid diseases including hypothyroidism, hyperthyroidism and Grave’s disease. SLE: Systemic lupus erythematosus.