Table 1:

Demographic Information and Group Comparisons.

				MS vs. HCa		CP vs. CI
	CP (n=15)	CI (n=16)	HC (n=24)	Test Stat.	p Value	Test Stat.	p Value
Age, mean (SD)	41.19 (2.47)	41.33 (3.17)	36.46 (10.67)	1.63	0.11b	0.04	0.97b
Gender, M:F	4:11	5:11	13:11	3.56	0.06c	0.08	0.78c
Education, mean (SD)	16.19	15.93	N/A			−0.34	0.74b
EDSS, median (range)	2 (1–4)	2 (1–6.5)	N/A			0.19	085d
Age at Disease Onset, mean (SD)	34.5 (8.59)	32.27 (10.51)	N/A			−0.65	0.52b
Disease Duration, mean (SD)	6.69 (5.99)	9.07 (6.49)	N/A			1.06	0.30b

Abbreviations: CP = Cognitively Preserved; CI = Cognitively Impaired; HC = Healthy Control; EDSS = Expand Disability Status Scale.

^aMS versus HC group comparisons conducted with entire MS sample.

^bStudent’s t-test.

^cχ² test.

^dWilcoxon rank sum test.