In our study, the RUDAS-Thai and the MMSE-Thai 2002
demonstrated good reliability and discriminative properties in
dementia screening. According to Table 2, a cutoff point of
24 or lower yielded good dementia screening accuracy based
on its performance including the Youden index which was different
from the recommended cutoff point of 23 of 30.12,15 The
screening performance of MMSE-Thai 2002 scores as showed
in Table 3 also revealed that an MMSE-Thai 2002 score of 24
served as the optimal cutoff point for screening patients with
developing dementia.