Table 1.

Demographic and clinical data.

	NC (n = 33)	SCD (n = 32)	Statistics	p
Age	64.55 ± 5.33	65.22 ± 5.02	t(63) = 0.524	0.602
Gender (M/F)	8/25	5/27	χ2(1) = 0.754	0.385
Education years	12.97 ± 3.34	12.25 ± 2.62	t(63) = −0.965	0.338
MMSE	28.97 ± 1.31	28.66 ± 1.31	t(63) = −0.964	0.339
AVLT immediate	17.55 ± 4.57	16.94 ± 4.77	t(63) = −0.525	0.601
AVLT short delayed	5.27 ± 2.79	4.78 ± 2.32	t(63) = −0.771	0.444
AVLT long delayed	5.00 ± 2.86	4.56 ± 2.38	t(63) = −0.669	0.506
AVLT cued recall	4.70 ± 2.32	4.53 ± 2.05	t(63) = −0.305	0.762
AVLT recognition	21.91 ± 1.44	21.50 ± 1.34	t(63) = −1.181	0.242
AFT	19.18 ± 4.00	18.38 ± 4.80	t(63) = −0.737	0.464
BNT	27.39 ± 2.45	27.03 ± 2.63	t(63) = −0.575	0.567
TMT_A	58.24 ± 21.32	60.44 ± 16.66	t(63) = 0.462	0.646
TMT_B	131.42 ± 29.66	164.06 ± 64.81	t(63) = 2.624	0.011*
SDMT	41.94 ± 9.22	36.84 ± 10.55	t(63) = −2.075	0.042*
CDT	27.91 ± 1.99	26.75 ± 3.04	t(63) = −1.825	0.073
APOE (ε3ε3/ε3ε4)	17/5	23/5	χ2(1)= 0.183	0.669a

Values are the mean ± standard deviation. MMSE, mini-mental state examination; AVLT, auditory verbal learning test; AFT, animal fluency test; BNT, Boston naming test; TMT-A, trail making test part A; TMT-B, trail making test part B; SDMT, symbol digit modalities test; CDT, clock drawing test; APOE, apolipoprotein E.

^*p < 0.05,

^aAPOE ε4 status not determined for the whole cohort.