TABLE 1.
Demographic information and study characteristics of participants grouped by clinical diagnosis.
| Control | SCD | MCI | AD | |
|---|---|---|---|---|
| Number | 137 | 211 | 112 | 66 |
| Age, years (SD) | 68.2 (4.9) | 71.4 (5.8) | 72.3 (5.4) | 75.5 (6.3) |
| Female | 54% | 43% | 43% | 65% |
| MMSE (SD) | 29.3 (0.9) | 29.1 (1.1) | 27.5 (1.9) | 23.2 (3.1) |
| A+ | 27.7% | 40.8% | 72.3% | 92.4% |
| T+ | 7.3% | 15.2% | 37.5% | 68.2% |
| APOE ε4 a | 27.6% | 34.6% | 50.5% | 64.5% |
Abbreviations: A+, amyloid pathology above cut‐off; AD, Alzheimer's disease; APOE ε4, apolipoprotein E ε4 allele; MCI, mild cognitive impairment; MMSE, Mini‐Mental State Examination; SCD, subjective cognitive decline; SD, standard deviation; T+, tau pathology above cut‐off.
a
No APOE data were available for 17 participants.