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Table 2 Test-retest reliability results for all task metrics on the affected side

From: Reliable and valid robot-assisted assessments of hand proprioceptive, motor and sensorimotor impairments after stroke

Category Metric Mean±SD T1 Mean±SD T2 Mean±SD T2-T1 ICC(A,k) SRD SRD(%) Shift Correlation
Sensory AE [deg] 14.63 ± 6.43 13.71 ± 6.24 2.68 ± 2.94 0.90 (0.88–0.91) 9.12 14.65 -3.63 0.74***
Motor Vel. Flex. [deg/s] 314.94 ± 180.30 315.16 ± 162.50 0.22 ± 107.56 0.89 (0.84-0.93) 159.54 17.83 -0.003 0.84***
Vel. Ext. [deg/s] 149.06 ± 146.27 149.80 ± 144.74 0.74 ± 43.80 0.98 (0.97-0.98) 60.68 11.62 -0.15 0.97***
AROM [deg] 43.89 ± 36.20 42.11 ± 32.29 -1.78 ± 11.16 0.97 (0.96–0.98) 15.58 12.77 1.47 0.92***
PROM [deg] 83.88 ± 10.48 85.41 ± 7.95 1.53 ± 5.89 0.89 (0.83–0.93) 8.83 16.57 -3.02 0.83***
Force Flex. [N] 11.64 ± 11.55 10.72 ± 10.08 -0.91 ± 3.44 0.97 (0.96–0.98) 4.88 10.92 2.07 0.94***
Force Ext. [N] 4.12 ± 4.52 3.55 ± 3.67 -0.57 ± 1.93 0.94 (0.91–0.96) 2.80 16.72 3.80 0.93***
Sensorimotor RMSE Slow [deg] 21.09 ± 8.68 21.03 ± 9.40 -0.06 ± 6.12 0.87 (0.81–0.92) 9.19 25.72 -0.17 0.81***
RMSE Fast [deg] 21.45 ± 7.80 22.06 ± 9.06 0.60 ± 5.87 0.86 (0.79–0.91) 8.82 24.75 1.95 0.82***
  1. AE: Position Matching Absolute Error, Vel. Flex./Ext.: Maximum Velocity Flexion/Extension, AROM/PROM: Active/Passive Range of Motion, Force Flex./Ext.: Maximum Force Flexion/Extension, RMSE Slow/Fast: Tracking Error RMSE Slow/Fast, T1: Test, T2: Retest, ICC: Intraclass Correlation Coefficient, SRD: Smallest Real Difference, SRD%: Smallest Real Difference as a percentage of the range of values across all trials, Shift: Systematic Shift, Correlation: Spearman Correlation between Test and Retest. The defined thresholds for reliability were: ICC>0.70, SRD%<30%, Shift\(<\mid\)6.35\(\mid\) (where negative shift means improvement on retest and positive means worse performance on retest). Statistical significance was defined as: p-value<0.05: *, p-value<0.01: **, p-value<0.001: ***