Table 1:

Demographic and medical history descriptive statistics for healthy controls, patients with amnestic MCI, and subjects with AD (N = 41)

NC (n = 15) n (%)aMCI (n = 12) n (%)AD (n = 14) n (%)χ2/F-testP Value
Demographics
    Age (mean) (yr)77.54 ± 4.0179.05 ± 7.2378.30 ± 9.550.15.87
    Female10 (66)6 (50)8 (57)0.78.68
    Education (mean ± SD)16.14 ± 2.5115.08 ± 3.6615.14 ± 2.830.54.59
    Right-handed13 (87)11 (92)13 (93)1.94.75
    White race14 (93)10 (83)12 (86)4.46.62
Medical history
    Hypertension8 (53)8 (67)4 (29)3.95.14
    Hypercholesterolemia12 (80)9 (75)6 (43)3.09.21
    Diabetes2 (13)1 (8)1 (7)0.35.84
    Thyroid disease3 (20)2 (17)1 (7)1.01.60
    Cardiac arrest2 (13)3 (25)1 (7)2.01.37
    Cardiac bypass1 (7)1 (8)0 (0)1.13.57
    Stroke or TIA1 (7)1 (8)1 (7)0.03.99
    Depression within the past 2 years4 (27)1 (8)4 (29)1.85.40
  • Note:—TIA indicates transient ischemic attack.