Increased Female MS Incidence and Differences in Gender-Specific Risk in Medium- and High-Risk Regions in Finland from 1981–2010

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