| Treatment | Placebo | Placebo | MMX 2.4 g/d | MMX 2.4 g/d | MMX 4.8 g/d | MMX 4.8 g/d |
| Disease duration/relapse history | <1Y | ⩾1Y+⩾3R | <1Y | ⩾1Y+⩾3R | <1Y | ⩾1Y+⩾3R |
| Total n | 55 | 57 | 53 | 54 | 65 | 56 |
| Sig score ⩽1, n (%) | 29 (52.7) | 19 (33.3) | 34 (64.2) | 36 (66.7) | 53 (81.5) | 37 (66.1) |
MMX, MMX mesalazine; g/d, grams/day; Y, year; R, relapses.