Table 1 Utilisation of different Interferon Beta formulations
|  | Avonex® | Betaferon® | Extavia® | Plegridy® | Rebif® |
|---|---|---|---|---|---|
Number | 618 | 348 | 69 | 259 | 1220 |
Age, years | 45.1 ± 13.8 | 48.1 ± 13.2 | 49.7 ± 14.2 | 42.1 ± 17.7 | 41.7 ± 16.0 |
Sex, females (%) | 425 (68.77%) | 211 (60.63%) | 49 (71.01%) | 178 (68.72%) | 806 (66.06%) |
Charlson comorbidity index | |||||
 0 | 301 | 172 | 43 | 107 | 632 |
 1–2 | 27 | 32 | 8 | 6 | 35 |
  > 2 | 3 | 3 | 1 | 3 | 7 |