Table 1.

Patient characteristics

	Mean (95% CI)
Age	67.4 ± 0.7 (range 31–94; median 69.0)
Sex	57% male, 43% female
Clinical history of stroke	12.6 %
Years of education	9.3 ± 0.3 (range 0–23; median 9)
IQCODE	3.38 ± 0.04 (range 1.3–5.0; median 3.2)
Mini-mental state examination (total score)	24.0 ± 0.4 (range 0–30; median 26)
Boston naming test (total score)	10.1 ± 0.2 (range 0–15; median 11)
Seoul verbal learning test (immediate recall)	15.2 ± 0.4 (range 0–36; median 16)
Rey complex figure test (copy)	26.3 ± 0.55 (range 0–36; median 30)