Exploring the predictive value of the evoked potentials score in MS within an appropriate patient population: a hint for an early identification of benign MS?

Table 2 Correlations between EP score and EDSS

Variable	At FNE		At last follow-up
Variable	ρ	p-value	ρ	p-value
(a)F_EDSS
≤ 1.5(n=94,EP score 6.4±7.5, Disease duration 3.7±4.1)	0.14	0.15	0.33	0.002
>1.5(n=49, EP score 10±9.8, Disease duration 5.9±5.1)	0.39	0.0114	0.41	0.0064
(b)Interval between MS onset and FNE
< 2 yrs (n=48)	0.08	0.55	0.46	0.0027
2-6 yrs (n=55)	0.20	0.13	0.34	0.0297
> 6 yrs (n=40)	0.47	0.006	0.46	0.009

(a) patient population divided for the median EDSS; (b) patient population stratified for the interval between onset and the first neurological evaluation (FNE); p-values are corrected for multiple comparisons; F_EDSS= first EDSS assessment.