Table 4

Details of polyp cancers and invasive cancers detected during the follow up period

	Polyp cancers			Invasive cancers
	1	2		1	2	3^4-151	4^4-151
Randomisation group	6	1		1	1	5	5
Age at entry (y)	64	63		66	55	55	60
Sex	Male	Male		Male	Female	Female	Male
Age cancer detected	70	70		76	58	62	70
Follow up round	1	2		9^4-150	2	—	—
Size of tumour (cm)	2.0	1.5		NK	3.0	NK	NK
Location of tumour	Transverse colon	Sigmoid		Caecum	Splenic flexure	Caecum	Sigmoid
Dukes' stage	A	A		B	C	C	B
Survival status	Alive	Alive		Alive	Alive	Dead	Alive

↵4-150 Cancer detected at unscheduled visit two months after ninth polyp visit.
↵4-151 Cancer detected by Nottingham faecal occult blood screening study.
NK, not known, tumour size not stated in histopathology report.