Table 3 Characteristics of the validation cohorts for performance validation of PET-based model. Age and education are reported as mean(standard deviation)
From: Machine learning prediction of future amyloid beta positivity in amyloid-negative individuals
| Â | CN-cohort | MCI-cohort | ||
|---|---|---|---|---|
Baseline characteristics | Converter-CN | Stable-CN | Converter-MCI | Stable-MCI |
Sample size (N) | 74 (44%) | 95 (56%) | 234 (72%) | 90 (28%) |
ADNI1/ADNIGO/ ADNI2/ADNI3 | 48/0/22/4 | 69/0/24/2 | 165/8/53/8 | 47/25/18/0 |
Age, years | 75.9 (4.5) | 74.6 (5.6) | 74.1 (6.6) | 72.5 (7.3) |
Sex, M/F | 46/28 | 42/53 | 147/87 | 34/56 |
Education, years | 16.1 (2.8) | 16.5 (2.8) | 15.9 (2.8) | 15.7 (3.0) |
APOE4 (0/1/2) | 48/24/2 | 75/19/1 | 80/112/42 | 53/33/4 |
CN/SMC/EMCI/LMCI | 63/11/0/0 | 80/15/0/0 | 0/0/24/187 | 0/0/22/212 |