Table 2.

Clinical symptom score and colon mucosa inflammation score ($\stackrel{-}{x}$ ± s).

Group	n	The score of clinical symptoms (Mayo score)		The score of colon mucosa inflammation
		Before treatment	After treatment	Before treatment	After treatment
Experiment group	41	7.17 ± 1.26	2.46 ± 0.67∗	2.07 ± 0.29	0.54 ± 0.14∗
Control group	41	7.02 ± 1.21	3.96 ± 0.71∗	2.02 ± 0.29	0.71 ± 0.17∗
z value		0.560	2.654	0.784	2.742
P value		0.674	0.008	0.431	0.010

z value calculated by Wilcoxon rank-sum test between two groups. *P < 0.01, comparing with before treatment using Wilcoxon rank-sum test.