Table 7.
Test-Retest Changes beyond what is Expected from the Simple Regression Model
| Neurocognitive Domain | Better than 90% CI | Worse than 90% CI | ||||
|---|---|---|---|---|---|---|
| AR (N=42) |
AR-C (N=6) |
FE (N=20) |
AR (N=42) |
AR-C (N=6) |
FE (N=20) |
|
| Executive Functioning | 2.4% | 0% | 5.0% | 2.4% | 16.7% | 20.0% |
| Processing Speed | 7.1% | 0% | 5.3% | 2.4% | 33.3% | 21.1% |
| Verbal Learning | 7.5% | 0% | 31.6% | 7.5% | 16.7% | 5.3% |
| Working Memory | 11.9% | 0% | 5.0% | 16.7% | 33.3% | 20.0% |
| General Intelligence | 21.4% | 16.7% | 10.0% | 9.5% | 16.7% | 20.0% |
| Global Index | 2.4% | 0% | 0% | 2.4% | 16.7% | 10.0% |
Note. Predicted score = intercept + (unstandardized regression coefficient × baseline score); 90% CI (confidence interval) = predicted score +/− (1.64 × SEresidual); SEresidual = standard deviation of residual from regression equation of NC group; equations: CI = .31 + (.58 × baseline) +/− 1.29 for EF; CI = .15 + (.75 × baseline) +/− 1.05 for PS; CI = .18 + (.69 × baseline) +/− 1.45 for VL; CI = .18 + (.79 × baseline) +/− .85 for WM; CI = .19 + (.81 × baseline) +/− .48 for IQ; CI = .17 + (.75 × baseline) +/− .98 for GNI; AR = At-Risk Not Converted; AR-C = At-Risk Converted.