Figure 3.

(a) Box-plot of the sSDMT scores between CI patients, CP patients and HC. Mann–Whitney U tests. (b) ROC curves showing the sensitivity and 1-specificity in distinguishing CI patients, CP patients and HC with the sSDMT. AUC-values and 95% confidence intervals (in brackets) are reported.

Abbreviations: sSDMT, smartphone Symbol Digit Modalities Test; CI, patients with MS classified as cognitively impaired; CP, patients with MS classified as cognitively preserved; HC, healthy controls; ROC curve, receiver operating characteristic curve; AUC, area under the curve.