From: Changes in magnetic resonance imaging disease measures over 3 years in mildly disabled patients with relapsing-remitting multiple sclerosis receiving interferon β-1a in the COGnitive Impairment in MUltiple Sclerosis (COGIMUS) study
≥2 impaired cognitive tests at baseline
No (n = 114)
Yes (n = 44)
P-value
Stability or increase of T2 lesion volume, n (%)
Yes
34 (29.8)
21 (47.7)
0.034
No
80 (70.2)
23 (52.3)