Characteristics of relapse of distal ulcerative colitis in the patients receiving three suppositories a week of either 1 g mesalazine or placebo (where applicable, results are expressed as means (SD))
| Mesalazine | Placebo | p Value | |
| Number of patients | 23 | 29 | |
| No of stools/day | 3.2 (1.8) | 3.4 (2.0) | 0.91 |
| Blood in stools (% subjects) | 91.3 | 100 | 0.26 |
| Mucus (% subjects) | 43.5 | 64.3 | 0.14 |
| Tenemus (% subjects) | 39.1 | 65.5 | 0.024 |
| Pain (% subjects) | 43.5 | 51.7 | 0.39 |
| Extent of lesions (cm) | 9.4 (5.6) | 11.4 (6.9) | 0.58 |
| Endoscopy (% subjects) | 0.54 | ||
| Score 1 | 9.5 | 4.2 | |
| Score 2 | 47.6 | 41.7 | |
| Score 3 | 28.6 | 41.7 | |
| Score 4 | 14.3 | 12.4 |