Table 1 Group demographics and neuropsychological scores

Mean age ± SD

71.2 ± 7.3

72.8 ± 6.9

t(120) = −1.27, p = 0.105

Sex (female/male)

33/35

28/26

χ²(1) = 0.13, p = 0.715

Logical memory scores ± SD

12.84 ± 3.69

4.85 ± 3.80

t(120) = 11.72, p < 0.001

MMSE ± SD

29.2 ± 1.1

26.8 ± 2.3

t(71.36) = 7.13, p < 0.001

Clinical Dementia Rating scale (CDR) ± SD

0.4 ± 0.8

2.3 ± 1.3

χ²(11) = 65.44, p < 0.001

Total intracranial volume (ICV) ± SD

1.489,012 ± 126,755

1.499,908 ± 203,826

t(84.27) = −0.34, p = 0.366