Table 1.
Descriptive statistical information for the subjects in the study
| Diagnostic group | Training cohort (OASIS subjects) |
Validation cohort (ADNI subjects) |
|||
|---|---|---|---|---|---|
| OC | MCI | OC | MCI | Alzheimer's disease | |
| Sample size | 49 | 48 | 94 | 57 | 65 |
| Age | 76.6 (4.9) | 78.0 (5.6) | 76.0 (5.0) | 76.4 (6.1) | 76.6 (7.7) |
| Percent female | 65% | 60% | 52% | 40% | 56% |
| MMSE | 29.4 (0.8) | 25.9 (2.9) | 29.2 (1.0) | 26.7 (1.7) | 22.5 (2.0) |
| CDR-SB | 0.0 (0.1) | 2.8 (1.0) | 0.0 (0.0) | 1.5 (0.8) | 5.7 (1.2) |
Means are listed with standard deviations in parentheses. OC = Older controls; MCI = individuals with mild cognitive impairment; Alzheimer's disease = individuals with clinically diagnosed Alzheimer's disease; OASIS = Open Access Series of Imaging Studies; ADNI = Alzheimer's Disease Neuroimaging Initiative.