Table 1. Mean Pre- and Post-lavage colon cleansing.

		Mean DRRI	SD	P value	% improvement
First segment	pre	0.99	0.69	< .001	81.8
	post	1.80	0.80
Second segment	pre	1.55	0.70	< .001	37.1
	post	2.13	0.72
Third segment	pre	2.07	0.71	< .001	18.8
	post	2.46	0.56
Overall	pre	1.56	0.52	< .001	33.3
	post	2.08	0.59