Table 2.

Disease in control cases

	Breath samples		Watery stool samples
	Number	Rate	Number	Rate
Polyps	62	47.0%	74	50.0%
Diverticula	24	18.2%	44	29.7%
Haemorrhoids	4	3.0%	7	4.7%
Ischaemic colitis	3	2.3%	4	2.7%
Non-peculiar colitis or ulcers	2	1.5%	4	2.7%
Ulcerative colitis	2	1.5%	4	2.7%
Diverticular bleeding	0	0%	1	0.6%
Mesenteric panniculitis	1	0.8%	1	0.6%
Infectious colitis	0	0%	1	0.6%
Chronic appendicitis	0	0%	1	0.6%
Lynch syndrome	1	0.8%	1	0.6%

Multiple answers were allowed for benign disease.