Screening Accuracy and Determination of Optimal Cutoff
Point for Dementia Screening
The performance of the RUDAS-Thai for dementia screening
in geriatric outpatients is summarized in Table 2, where the
RUDUS-Thai represents different cutoff points. The screening
performance of the MMSE-Thai 2002 for dementia was summarized
in Table 3.
The ROC Curves
The AUC of the RUDAS-Thai (0.81, 95% CI: 74.8-87.2) was
similar to the AUC of the MMSE-Thai 2002 (0.81, 95% CI:
74.9-87.4) as shown in Figure 1.
Correlation Between RUDAS-Thai and MMSE-Thai 2002
The RUDAS-Thai and MMSE-Thai 2002 scores correlated
highly, with a Pearson’s coefficient of .80 (95% CI: 0.745-
0.85, P < .0001).