Baseline characteristics of placebo patients in two phase III trials
| Copolymer-1 (sc) | Interferon β-1a (sc) | |
| Number of patients | 126 | 187 |
| Mean entry EDSS (SD) | 2.4 (1.3) | 2.4 (1.2) |
| Mean disease duration (SD) | 6.6 (5.1) | 6.1 (4.8) |
| Mean entry 2 y relapse rate (SD) | 2.9 (1.1) | 3.0 (1.3) |
| Mean age (SD) | 34.3 (6.5) | 34.7 (7.5) |
| Male: female ratio | 1:3.2 | 1:3 |
| Participating centres | 11 | 22 |