Table 1.
Characteristics of MS cases in Pirkanmaa, Seinäjoki, and Vaasa during the period 1981–2010.
| Number of cases, n (%) | |
| Total | 1617 |
| Male | 512 (32) |
| Female | 1105 (68) |
| F/M | 2.2 |
| Diagnosis using Poser, n (%) | |
| CDMS | 60 (4) |
| CDMS + paraclinical | 1223 (75) |
| LSDMS | 75 (5) |
| LSDMS + paraclinical | 259 (16) |
| Age, years | |
| At onset, median | 32 |
| At the time of diagnosis, median | 37 |
| Diagnostic delay, years | |
| Mean | 4.6 |
| Median | 2.0 |
| First symptoms by anatomic level, % | |
| Brainstem/cerebellum | 25 |
| Visual tract | 22 |
| Sensory | 22 |
| Medullary | 19 |
| Pyramidal tract above medulla | 5 |
| Other/UN | 4 |
| Multiple | 3 |