Table 1.
Demographic, neuropsychological, and discriminant validity statistical summary.
| N | Females | Age | Education | MMSE | LOGIMEMI | LOGIMEMII | DIGIF | DIGIB | ANIMALS | VEG | TRAILA | TRAILB | DSYM | BOSTON | GDS30 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOC | 18 | 11 | 75.1 ± 1.2 | 16.2 ± 0.7 | 29.3 ± 0.2 | 13.9 ± 0.8 | 13 ± 0.9 | 9.8 ± 0.4 | 7.4 ± 0.5 | 20.3 ± 1.8 | 14.7 ± 1.2 | 34.1 ± 1.9 | 73.0 ± 3.8 | 49.3 ± 2.0 | 28.9 ± 0.3 | 2.4 ± 0.5 | ||||
| aMCI | 17 | 5 | 75.8 ± 2.2 | 16.9 ± 0.5 | 27.8 ± 0.4 | 10.0 ± 1.2 | 8.1 ± 1.2 | 8.8 ± 0.5 | 6.0 ± 0.7 | 17.2 ± 1.3 | 13.1 ± 1.1 | 41.7 ± 3.4 | 119.0 ± 18.6 | 38.3 ± 3.7 | 27.0 ± 0.7 | 3.5 ± 1.1 | ||||
| AD | 10 | 8 | 76.4 ± 1.7 | 17.7 ± 1.3 | 25.1 ± 0.8 | 12.1 ± 3.7 | 6.7 ± 4.2 | — | — | 17.9 ± 3.8 | 24.9 ± 6.0 | 55.5 ± 8.9 | 144.4 ± 37.6 | — | 27.7 ± 0.9 | 6.6 ± 1.8 | ||||
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| df | 1 | 2, 23.3 | 2, 20.2 | 2, 14.2 | 2, 16.0 | 2, 16.2 | 2, 38 | 2, 38 | 2, 38 | 2, 13.0 | 2, 12.4 | 2, 10.5 | 2, 38 | 2, 13.3 | 3, 38 | |||||
| F/χ2 | 7.203 | 0.198 | 0.608 | 15.58 | 3.50 | 6.40 | 4.37 | 1.88 | 1.60 | 2.49 | 7.04 | 7.91 | 6.00 | 4.10 | 5.02 | |||||
| p | 0.01 | 0.41 | 0.277 | 0.0002 | 0.02 | 0.003 | 0.005 | 0.08 | 0.108 | 0.062 | 0.005 | 0.005 | 0.003 | 0.02 | 0.006 | |||||
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| Pairwise comparisons p | NOC-aMCI | 0.0025 | 0.007 | 0.002 | 0.064 | — | — | — | 0.033 | 0.015 | 0.009 | 0.009 | 0.179 | |||||||
| aMCI-AD | 0.008 | 0.302 | 0.352 | — | — | — | — | 0.103 | .259 | — | 0.256 | 0.085 | ||||||||
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| Correlation with WM effect | ρ | 0.104 | 0.116 | −0.014 | 0.121 | 0.029 | −0.060 | 0.008 | 0.228 | 0.154 | −0.014 | −0.009 | −0.046 | |||||||
| p | 0.259 | 0.248 | 0.467 | 0.254 | 0.438 | 0.367 | 0.481 | 0.176 | 0.181 | 0.470 | 0.480 | 0.391 | ||||||||
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| Correlation with RP effect | ρ | −0.091 | 0.039 | −0.233 | −0.081 | 0.118 | −0.214 | 0.264 | 0.017 | 0.075 | −0.069 | −0.131 | 0.025 | |||||||
| p | 0.286 | 0.410 | 0.083 | 0.331 | 0.260 | 0.108 | 0.060 | 0.913 | 0.330 | 0.354 | 0.220 | 0.439 | ||||||||
NOC = normal older control, aMCI = amnestic mild cognitive impairment, AD = Alzheimer disease; N = number of participants, Females = number of female participants, Age = age of participant in years, Education = formal education of participants in years; MMSE = mini-mental status examination, LOGIMEMI = Logical Memory Story A, Immediate Recall, LOGIMEMII = Logical Memory Story A, Delayed Recall, DIGIF = Digit Span Forward, DIGIB = Digit Span Backward, ANIMALS = Category Fluency (Animals), VEG = Category Fluency (Vegetables), TRAILA = Trailmaking A, TRAILB = Trailmaking B, DSYM = Digit Symbol, BOSTON = Boston Naming Task, GDS30 = Geriatric Depression Scale, long-form; df, F/χ2, and p indicate statistical summaries for the omnibus tests of group differences for each column; Pairwise comparisons p NOC-aMCI and aMCI-AD = pairwise group comparisons, as indicated, for each significant neuropsychological omnibus F test; Correlation with WM/RP effect ρ and p = size and significance of non-parametric correlations between the working memory (WM) and repetition priming (RP) task effects and each neuropsychological test, except for in the case of TRAILB, where the difference between TRAILA and TRAILB was evaluated.