Table 3. Percentage of intestinal segments rated as diagnostic on a two-point scale in terms of the possibility to rule out a potential underlying pathology by CT-Scanner.

Segment	water group (n = 92)		mannitol group (n = 88)		p-value
	R1 [%]	R2 [%]	R1 [%]	R2 [%]	R1	R2
64-row CT	n = 71		n = 61
descending duodenum	35	51	36	44	0.921	0.463
horizontal duodenum	18	32	25	30	0.382	0.724
proximal jejunum	8	21	10	15	0.787	0.348
distal jejunum	34	24	61	43	0.002	0.023
proximal ileum	46	65	66	70	0.029	0.489
distal ileum	58	52	74	48	0.055	0.604
Mean percentage over all segments	33	41	45	42
16-row CT	n = 21		n = 27
descending duodenum	29	52	22	44	0.628	0.597
horizontal duodenum	19	33	4	30	0.091	0.796
proximal jejunum	5	10	4	33	0.881	0.056
distal jejunum	38	19	74	67	0.014	0.001
proximal ileum	33	62	70	93	0.012	0.011
distal ileum	52	33	78	63	0.069	0.045
Mean percentage over all segments	29	35	42	55

R1 = reader 1; R2 = reader 2; p-values: Mann-Whitney-test.