Table 4.

Average cognitive performance scores for standardized scores on neuropsychological measures and proportion of impaired patients for the total sample and according to age groups (<65 and ≥65 years)

	Patients assessed, n	Total sample1	Proportion impaired of total sample, %	Proportion impaired <65 years, %	Proportion impaired ≥65 years, %
General cognitive abilities			12	0	20
MMSE2	105	28.2 (2.1)
Visuoconstructive ability			19	8	27
Copy, RCFT	96	46.7 (15.2)
Visual memory			34	26	40
Delayed recall, RCFT	89	43.4 (16.9)
Verbal memory			13	0	21
Total learning, CVLT II	100	48.7 (11.4)
Short delay free recall, CVLT II	99	47.3 (12.0)
Long delay free recall, CVLT II	99	48.5 (10.9)
Mental processing speed			20	20	21
Digit Symbol Test (WAIS IV)	100	41.7 (7.9)
Color Naming, CWIT	104	40.5 (10.2)
Number Sequencing, TMT	105	40.7 (11.9)
Letter Sequencing, TMT	103	41.6 (12.2)
Executive functioning			26	10	37
Inhibition, CWIT	99	45.2 (11.7)
Inhibition/Switching, CWIT	99	42.0 (12.8)
Number-Letter Switching, TMT	103	37.0 (14.1)
Language production			12	5	17
Letter fluency	99	48.6 (12.4)
Category fluency	98	52.3 (12.9)

MMSE, Mini-Mental State Examination; RCFT, Rey Complex Figure Test; CVLT II, California Verbal Learning Test II; WAIS IV, Wechsler Adult Intelligence Scale IV; CWIT, Color Word Interference Test; TMT, Trail Making Test.

¹Values represent mean (standard deviation).

²Raw score.