Table 2. Demographics of subjects included in this study and their classifications in the training and testing sets according to normal and abnormal group following the 36-point RCF scoring system.

Characteristic	Normal*	Abnormal†
No. of subjects (n=2,209)	1,296	913
Age	71.27±9.65	72.53±10.24
Males (females)	447 (849)	375 (538)
Education	8.89±4.92	8.24±5.44
RCF score‡	57.60±21.78	2.95±4.25
Training	1,296	913
Testing	450	330

Data are shown as mean±standard deviation.

RCF: Rey complex figure.

^*Normal, normal subjects with RCF score ≥16%; ^†Abnormal, abnormal subjects with RCF score <16%; ^‡p<0.05.