Table 2.
Scores, Test–Retest Reliability, Standard Error of Measurement, and Minimal Detectable Change of Four Balance Measures Evaluated on Two Occasions in People with Mild to Moderate Alzheimer Disease (n=15)
| BBS | TUG, s | FRT, cm | |
|---|---|---|---|
| Trial 1, mean (SD) | 41.67 (14.25) | 16.94 (9.22) | 19.00 (11.22) |
| Trial 2, mean (SD) | 44.67 (7.84) | 16.88 (8.65) | 17.68 (8.97) |
| No. (%) who required cueing to complete tasks during testing | 8 (53.3) | 5 (33.3) | 3 (20.0) |
| ICC (95% CI) | 0.95 (0.85–0.98) | 0.72 (0.33–0.90) | 0.81 (0.52–0.94) |
| SEM | 6.01 | 1.24 | 4.56 |
| MDC95 | 16.66 | 3.44 | 12.64 |
| Agreement (Bland–Altman plot) | 16.94 | 3.82 | 16.94 |
BBS=Berg Balance Scale; TUG=timed up-and-go test; FRT=Functional Reach Test; ICC=intra-class correlation coefficient; SEM=standard error of measurement; MDC95=minimal detectable change.