Table 3.

Mean A’ scores and DMT 7 A’ Scores (highest difficulty task), were significantly higher in MSNI vs. MSCI. These differences were also seen with DD, T2LV and ii between the MSNI and MSCI groups.

Patients		T2 LV (ml)	Impairment Index	Mean EDSS	Mean A’ score	DMT7 A’ score
MSNI	Mean	6.0072	0.0750	1.30	0.903	0.8375
10	SD	6.5200	0.0540	0.79	0.061	0.0791
MSCI	Mean	24.9589	0.5900	4.25	0.803	0.6878
30	SD	19.7622	0.1610	1.80	0.076	0.1183

A=accuracy, DMT=delayed memory task, LV=lesion volume, EDSS=expanded disability status scale.