Prevalence of multiple sclerosis according to Poser classification
| Category | n | % | Prevalence per 100 000 | 95% CI |
|---|---|---|---|---|
| CDMS, clinically definite MS; CI, confidence interval; CIS, clinically isolated syndrome; CPMS, clinically probable MS; LPMS, laboratory probable MS; LSDMS, laboratory supported definite MS; MS, multiple sclerosis. | ||||
| Poser classification | ||||
| CDMS | 303 | 68.9 | 88.6 | (78.7 to 98.6) |
| LSDMS | 32 | 7.3 | 9.4 | (6.1 to 12.6) |
| CPMS | 50 | 11.4 | 14.6 | (10.6 to 18.7) |
| LPMS | 2 | 0.5 | 0.6 | (0.0 to 1.4) |
| Classification unknown | 15 | 3.4 | 4.4 | (2.2 to 6.6) |
| Suspected MS (CIS) | 44 (39) | 10 (8.9) | 12.9 (11.4) | (9.1 to 16.7) (7.8 to 15.0) |
| Total | 446 | 100.0 | 130.5 | (118.4 to 142.6) |
| McDonald classification | ||||
| Not MS | 4 | 0.9 | 1.2 | (0.0 to 2.3) |
| Definite MS | 323 | 72.4 | 94.5 | (84.2 to 104.8) |
| Possible MS | 61 | 13.7 | 17.8 | (13.4 to 22.3) |
| Classification unknown | 15 | 3.4 | 4.4 | (2.2 to 6.6) |
| Suspected MS (CIS) | 43 (39) | 9.8 (8.9) | 12.6 (11.4) | (8.8 to 16.3) (7.8 to 15.0) |
| Total | 446 | 100.0 | 130.5 | (118.4 to 142.6) |