Table 7 Predictive value of evoked potential global score at basal examination on Expanded Disability Status Scale (EDSS) progression at follow‐up, defined as an increase of at least 1 (if baseline EDSS <5.5) and of at least 0.5 (if baseline EDSS ⩾5.5).
EP >13 | EP ⩽13 | Total | PV | |
---|---|---|---|---|
EDSS+ | 29 | 16 | 45 | 0.725 |
EDSS− | 11 | 28 | 39 | 0.636 |
Total | 40 | 44 | 84 |
EDSS, Expanded Disability Status Scale; EP, evoked potential; PV, predictive value.
The EP global score was categorised into two groups according to the median value: ⩽13 (less involved EP) and >13 (more involved EP). χ2 analysis: p = 0.001; odds ratio = 4.6 (1.8–11.6).