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| Control | MCI | AD | ||
| Other | Progressor | |||
| N Plasma samples | 54 | 233 | 163 | 112 |
| Mean age (range) | 75.4 (62–90) | 75.0 (55–90) | 74.8 (55–89) | 75.4 (55–89) |
| Gender M/F | 27/27 | 157/76 | 99/64 | 65/47 |
| APOE -ε4 frequency | 9% | 43% | 67% | 68% |
| Mean MMSE score (range) | 28.9 (25–30) | 27.3 (24–30) | 26.6 (23–30) | 23.6 (20–27) |
