Table 1.

Demographics and characteristics of study population

	CDR 0	CDR 0.5	CDR 1	Three-class p	Two-class p
Number of Subjects	689	784	92
Sex, %Female	55.59%	41.45%	41.30%	< 0.001	< 0.001
Age	72.67 (±6.12)	72.65 (±7.61)	74.81 (±8.75)	0.018	0.559
Mean Years of Education	16.68 (±2.47)	16.10 (±2.75)	15.41 (±2.62)	< 0.001	< 0.001
MoCA	25.68 (±2.65)	21.89 (±4.53)	15.67 (±4.74)	< 0.001	< 0.001
CDR Sum of Boxes	0.04 (±0.13)	1.61 (±0.98)	5.58 (±1.16)	< 0.001	< 0.001
Memory	0.00 (±0.00)	0.58 (±0.21)	1.16 (±0.38)	< 0.001	< 0.001
Orientation	0.00 (±0.04)	0.27 (±0.32)	1.07 (±0.39)	< 0.001	< 0.001
Judgement/Problem Solving	0.28 (±0.11)	0.36 (±0.28)	1.01 (±0.34)	< 0.001	< 0.001
Community Affairs	0.00 (±0.05)	0.16 (±0.25)	0.97 (±0.40)	< 0.001	< 0.001
Home/Hobbies	0.00 (±0.03)	0.20 (±0.28)	0.97 (±0.36)	< 0.001	< 0.001
Personal Care	0.00 (±0.00)	0.04 (±0.19)	0.40 (±0.49)	< 0.001	< 0.001