Table 3.

Measurements of wall thickness, color Doppler hyperemia, and resistance index in thickened bowel wall in patients with active and inactive Crohn’s disease and control group

	Crohn’s disease
Doppler ultrasound parameters	active (n = 74)	inactive (n = 64)	control (n = 67)	P
Wall thickness* (mm)	5.0 ± 1.8	3.1 ± 1.4	<2	<0.001*
Color hyperemia (grade):
0	0	16	67	<0.001‡
1	6	45	0
2	56	3	0
3	12	0	0
Resistance index*	0.61 ± 0.05	0.71 ± 0.05§	0.80 ± 0.11║	<0.001¶

*Median ± interquartile range.

†Mann-Whitney test for comparison of active and inactive group.

‡χ² test.

§48 examinees.

║15 examinees.

¶Significant differences between all three groups (Kruskal-Wallis test and Mann-Whitney test as pot hoc, P<0.001 for all).