Table 2: Clinical symptom score and colon mucosa inflammation score ( ± s).

Group The score of clinical symptoms (Mayo score) The score of colon mucosa inflammation Before treatment After treatment Before treatment After treatment Experiment group 41 * * Control group 41 * * value 0.560 2.654 0.784 2.742 value 0.674 0.008 0.431 0.010

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