Table 1: Demographic features of the total patients

Variables Values (n=504)
Age (yrs) 71.5 8.7
Female (%) 267 (51.5%)
Education(yrs) 8.8 4.4
Mean K-MMSE scores 26.1 1.9
Mean 3MS scores 80.2 9.3
Mean CDT scores 7.8 2.7
Mean CDT time 56.0 29.1


Yrs: years; K-MMSE: Korean version of the Mini-Mental State Examination; 3MS: Modified Mini-Mental State (3MS) test; CDT: Clock Drawing Test.