Table 4.

Results of Intraclass Correlation Coefficients (3,1 - for best trial or 3,k - for average of trials), Standard Error of the Measurement (SEM), and Minimal Detectable Changes with 90% Confidence Interval (MDC₉₀).

Outcome Measure	ICC [95% CI]	SEM	MDC₉₀ [95% CI]
360° Degree Turn Test (s)
Best Trial: Sound Lead	0.97 [0.94; 0.98]	0.06	0.15 [0.01; 0.31]
Best Trial: Prosthetic Lead	0.95 [0.90; 0.97]	0.07	0.18 [0.03; 0.33]
Average of 2 Trials: Sound Lead	0.97 [0.95; 0.99]	0.06	0.15 [0.01; 0.29]
Average of 2 Trials: Prosthetic Lead	0.93 [0.86; 0.97]	0.08	0.20 [0.08; 0.33]
Average of 4 Trials^*	0.97 [0.95; 0.99]	0.06	0.14 [0.01; 0.28]
5 Times Sit-To-Stand Test (s)
Best Trial	0.81 [0.61; 0.91]	0.28	0.67 [0.39; 0.94]
Average of 2 Trials	0.90 [0.77; 0.95]	0.23	0.54 [0.24; 0.84]
Functional Reach Test (cm)
Best Trial: Sound Lead	0.85 [0.69; 0.93]	0.76	1.77 [0.95; 2.59]
Best Trial: Prosthetic Lead	0.85 [0.69; 0.93]	0.78	1.82 [0.97; 2.66]
Average: Sound Lead	0.85 [0.67; 0.93]	0.74	1.73 [0.98; 2.49]
Average: Prosthetic Lead: Average	0.92 [0.81; 0.96]	0.58	1.36 [0.55; 2.18]
Average of 6 Trials	0.95 [0.89; 0.97]	0.44	0.99 [0.24; 1.74]
Figure-of-8 Walk Test
Best Trial: Speed (s)	0.94 [0.87; 0.97]	0.16	0.37 [0.10; 0.65]
Best Trial: Amplitude (steps)	0.90 [0.79; 0.95]	0.28	0.65 [0.28; 1.02]
Average of 2 Trials: Speed (s)	0.95 [0.90; 0.98]	0.15	0.35 [0.09; 0.61]
Average of 2 Trials: Amplitude (steps)	0.94 [0.87; 0.97]	0.23	0.53 [0.17; 0.89]
Four Square Step Test (s)
Best with Canes	0.69 [0.40; 0.85]	0.52	1.22 [0.83; 1.62]
Best without Canes	0.86 [0.71; 0.94]	0.41	0.95 [0.49; 1.41]
Average of 2 trials with Canes	0.81 [0.45; 0.93]	0.14	0.34 [0.20; 0.48]
Average of 2 trials without Canes	0.89 [0.72; 0.96]	0.13	0.31 [0.15; 0.47]

ICCs presented as 3,1 (for best trial) or 3,k (for average of trials). ICC=intraclass correlation coefficient; CI=confidence interval; SEM=standard error of measurement; MDC₉₀=minimal detectable changes with 90% confidence interval.

Average calculated using total turns, regardless of turn direction.