Table 4.

Most advanced lesion per participant and per invitee for primary and surveillance CT colonography

	Yield per 100 participants			Yield per 100 invitees
	COCOS population (n = 982)	COCOS population including surveillance CTC (n = 982)	p Value	COCOS population (n = 2920)	COCOS population including surveillance CTC (n = 2920)	p Value
Colorectal cancer (n)	0.5 (5)	0.5 (5)	ns	0.2 (5)	0.2 (5)	ns
Advanced adenoma (n)	5.6 (55)	8.0 (79)	<0.001	1.9 (55)	2.7 (79)	<0.001
≥10 mm	5.4 (53)	7.6 (75)	<0.001	1.8 (53)	2.6 (75)	<0.001
Non-advanced adenoma (n)	1.2 (12)	3.2 (31)	<0.001	0.4 (12)	1.1 (31)	<0.001
Serrated adenoma (n)	0.2 (2)	0.4 (4)	ns	0.1 (2)	0.1 (4)	ns
Hyperplastic polyp (n)	0.3 (3)	0.4 (4)	ns	0.1 (3)	0.1 (4)	ns
Advanced neoplasia (n)	6.1 (60)	8.6 (84)	<0.001	2.1 (60)	2.9 (84)	<0.001
≥10 mm	5.9 (58)	8.1 (80)	<0.001	2.0 (58)	2.7 (80)	<0.001

Note - Numbers in brackets are the actual number of individuals

Ns = not significant