Demographic Data
| Group | Education (y) | Age at PET (y) | MMSE* | Sex |
| Normal aging | 10.0 ± 4.1 | 68.8 ± 9.7 | 29.1 ± 0.9 | 12 M, 32 F |
| Nonconverting MCI | 8.9 ± 3.7 | 71.9 ± 6.4 | 26.8 ± 1.5 | 16 M, 12 F |
| MCI > 2 y | 10.4 ± 5.0 | 74.7 ± 7.0 | 26.3 ± 1.6 | 8 M, 28 F |
| MCI ≤ 2 y | 9.9 ± 4.5 | 75.5 ± 6.5 | 25.8 ± 1.9 | 22 M, 36 F |
| AD | 7.4 ± 4.2 | 73.4 ± 7.4 | 19.2 ± 4.0 | 18 M, 36 F |
↵* Normalized for education
MCI > 2 y = MCI converting after more than 2 y; MCI ≤ 2 y = MCI converting within 2 y.
Qualitative data are expressed as numbers; continuous data are expressed as mean ± SD.