Fig. 1

Two separate cut-offs and an indecisive area. The percentage of patients with Mild NCD who were correctly classified as patients (sensitivity, red line) and the percentage of normal controls that were correctly classified as normal controls (specificity, blue line) are illustrated. Two cut-offs are highlighted by the dashed lines: one cut-off for not-healthy results (23/24; with 88% specificity) and one cut-off for not-pathological results (26/27; with 91% sensitivity). Scores between these two cut-offs constitute an indecisive area (in orange), where information from further examinations is required. The + 1 adjustment for individuals with education < 12 years proposed by Nasreddine et al. was applied to calculate the MoCA score [6]