. Author manuscript; available in PMC: 2012 Oct 9.

Published in final edited form as: Value Health. 2011 Dec;14(8):1146–1152. doi: 10.1016/j.jval.2011.07.012

Table 1.

Attributes and levels for CT colonography and colonoscopy

Description	CT colonography	Colonoscopy (fixed)
How likely it is that you will need a second procedure after CTC to treat polyps or cancer	200 in 1000 people	None – one procedure to diagnose and treat polyps
	400 in 1000 people
Bowel preparation	Intensive	Intensive
Bowel preparation	Minimal
Test accuracy (likelihood of missing small cancers or polyps)	20 from 1000 people tested	10 from 1000 people tested
	40 from 1000 people tested
The one–off cost to you personally	$0 (no cost)	$0 (no cost)
	$100
	$200
	$300