Table 1.

Demographic and clinical characteristics of patients with MS and controls

Characteristic	Patients with MS	Controls
Gender, female: male (% female)	370:151 (71.0)	178:101 (63.8)
MS disease course
Relapsing remitting	345 (66.2)
Secondary progressive	139 (26.7)
Primary progressive	37 (7.1)
Race/ethnicity
White	483 (93.1)	240 (86.6)
African American	22 (4.2)	22 (7.9)
Hispanic Latino	9 (1.7)	3 (1.1)
Asian	2 (0.4)	9 (3.2)
Other	3 (0.6)	2 (.7)
Age, y	47.6 ± 11.1	45.9 ± 15.1
MS disease duration, y	15.2 ± 10.5
Treatment duration, y	4.32 ± 3.88
EDSS score, median [IQR]	3.0 [4.0]

Note: Unless otherwise indicated, values are given as number (percentage) or mean ± SD.

Abbreviations: EDSS: Expanded Disability Status Scale; IQR: inter-quartile range; MS, multiple sclerosis.