Table 2. Predictive accuracy of RDST-J for mild cognitive impairment at different cut-off points.

Cut-off point	Sensitivity	Specificity	Positive predictive value	Negative predictive value
RDST-J: Japanese version of the Rapid Dementia Screening Test.
Overall (n = 78)
≤ 11	91.2	52.4	83.9	68.8
≤ 10	86.0	76.2	90.7	66.7
≤ 9	75.4	95.2	97.7	58.8
≤ 8	66.7	100.0	100.0	52.5
RDST-J ≥ 5 points (n = 68)
≤ 11	89.4	52.4	80.8	68.8
≤ 10	83.0	76.2	88.6	66.7
≤ 9	70.2	95.2	97.1	58.8
≤ 8	59.6	100.0	100.0	52.5