Table 1 Results from the repeatability analysis when all subjects were analyzed together.

From: Validation of a modified visual analogue scale to measure user-perceived comfort of a lower-limb exoskeleton

 

RC (mm)

\({\mu }_\Delta\) (mm)

\({\sigma }_\Delta\) (mm)

\(\Delta {<10 \text { mm}}\) (%)

\(\Delta {<20 \text { mm}}\) (%)

90% threshold (mm)

Q1

39

5

19

47

75

32

Q2

46

4

23

40

65

38

  1. The table contains the repeatability coefficient (RC), signed mean difference between cycles (\(\mu _\Delta\)), standard deviation of the difference between cycles (\(\sigma _\Delta\)), percent of trials with between cycle differences (\(\Delta\)) less than 10 mm and 20 mm, and the 90% threshold. The 90% threshold was defined as the difference magnitude for which 90% of responses had absolute differences less than the threshold. Although the (RC) for both questions was large, 75% of the differences between cycles (\(\Delta\)) for Q1 were below 20 mm, implying that the VAS survey could measure a signal but not as well as for pain.
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