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Study demographics
| Group | n | Sex (M/F) | Age (y) | Education (y) | APOE ε4 (−/+) |
|---|---|---|---|---|---|
| Cognitively normal | 161 | 78/83 (52%) | 74 (6) | 16.6 (2.5) | 117/43 (27%) |
| SMC | 68 | 26/42 (62%) | 72 (6) | 16.6 (2.6) | 46/20 (30%) |
| Early MCI | 269 | 153/116 (43%) | 71 (7) | 16.0 (2.7) | 154/114 (43%) |
| Late MCI | 150 | 78/72 (48%) | 72 (8) | 16.7 (2.6) | 63/87 (58%) |
| Alzheimer's disease dementia | 121 | 73/48 (40%) | 75 (9) | 15.8 (2.6) | 39/82 (68%) |
| All | 769 | 408/361 (47%) | 72 (7) | 16.2 (2.6) | 419/346 (45%) |
Data for continuous measurements are mean (SD).
