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

Table 1 Comparison of our demographic data against published demographic data in collagenous colitis (mean ± SD)

	Total number	Age at diagnosis (yr)	Gender ratio M/F
Goff et al[8] 1997	31	66	5/26
Fernandez-Banares et al[1] 1999	23	57.8 ± 2.9	4/19
Agnarsdottir et al[9] 2002	71	66.1 ± 14.3	8/63
Olesen et al[3] 2004	51	Not reported	6/45
Koskela et al[18] 2004	30	56.5 ± 12.7	10/20
Kao et al 2006	171	63.8 ± 13.5	42/129

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.

Table 3 Comparison of our demographic data against published demographic data in lymphocytic colitis (mean ± SD)

	Total number	Age at diagnosis (yr)	Gender ratio M/F
Fernandez-Banares et al[1] 1999	37	65.3 ± 2.4	10/27
Agnarsdottir et al[9] 2002	54	68.7 ± 12.7	5/45
Olesen et al[3] 2004	199	59	59/140
Koskela et al[18] 2004	54	55.4 ± 13.2	8/46
Kao et al 2006	376	60.7 ± 16.1	106/270

Table 4 Comparison of concurrent diseases between lymphocytic colitis and the control group

Disease	Number of patients affected	Percentage (%)	Compared to control group
Hyperlipidemia	166	44.10	NS
Diabetes type I and II	55	14.60	NS
Thyroid diseases1	71	18.80	P < 0.01
Rheumatoid arthritis	15	3.99	P < 0.01
Fibromyalgia	17	4.52	P < 0.01
Raynaud/CREST syndrome	5	1.33	P < 0.01
Giant cell/temporal arteritis	2	0.53	P < 0.025
Polymyalgia rheumatica	6	1.60	NS
SLE	3	0.80	P < 0.025
Scleroderma	1	0.27	NS
Celiac disease	13	3.46	P < 0.001
IBS	43	11.40	P < 0.001
IBD	1	0.27	NS

¹Thyroid diseases including hypothyroidism, hyperthyroidism and Grave’s disease.