Table 2.

Disease-related variables

Variables	(Mean±SD)/frequency (%)
Mean age at the first symptom onset (years)	28.9±8.7
Mean duration of the disease (years)	10.1±6.7
Duration between the onset of symptoms and diagnosis
<2 months	424 (55.9%)
2-6 months	98 (12.9%)
6 months to 2 years	123 (16.2%)
>2 years	113 (14.9%)
First symptoms
Paresthesia	308 (40.6%)
Weakness of the limbs	311 (41%)
Blurred vision	302 (39.8%)
Diplopia	183 (24.1%)
Vertigo	243 (32.1%)
Family history of multiple sclerosis (MS)	96 (12.6%)