Comparison of Cortical Change Across All Reference Regions in Stable Aβ Group
| Reference region | Annual mean % change | SD | Annual mean absolute value % change | SD |
| Cerebellar gray matter | 0.8% | 1.6% | 1.4% | 1.1% |
| Whole cerebellum | 0.2% | 1.4% | 1.2% | 0.8% |
| Pons | −0.5% | 1.9% | 1.6% | 1.0% |
| Composite | −0.6% | 1.2% | 1.0% | 0.9% |
| WM | −1.2% | 1.7% | 1.6% | 1.3% |
| WM ratio | −1.2% | 1.7% | 1.6% | 1.3% |