Table 2.
Test | Time of accelerated decline (change point) | Pre-change point rate of decline | Post-change point rate of decline |
---|---|---|---|
Category Fluency | 3.0 years (95% CI: 1.7,5.0) | 1.97 points/year (95% CI: 1.50, 2.45) | 3.50 points/year (95% CI: 2.91, −4.09) |
Letter Fluency | 2.5 years (95% CI: 1.5, 4.9) | 0.91 points/year (95% CI: .23, 1.33) | 3.21 points/year (95% CI: 2.25, 3.91) |
Trailmaking Speed | 2.9 years (95% CI: 1.1, 8.3) | 1.90 per minute per year (95% CI: 1.07, 2.73) | 3.36 per minute per year (95% CI: 2.48, 4.24) |
Note. CI = confidence interval.