Skip to main content

Table 3 Agreement and repeatability—Kinect-A

From: Automated extraction and validation of children’s gait parameters with the Kinect

Gait parameters \(\rho\) CCC (9 5% CI) ICC (95 % CI) Bias (95 % LoA) PE (%) Repeatability
Absolute Mean %
Left step time (s) 0.881 0.85 (0.70–0.93) 0.92 (0.81–0.95) 0.017 (−0.057 to 0.092) 18.52 0.061 14.63
Right step time (s) 0.892 0.87 (0.73–0.94) 0.93 (0.84–0.98) 0.012 (−0.048 to 0.073) 15.43 0.071 17.50
Cadence (strides/min) 0.796 0.79 (0.58–0.90) 0.79 (0.59–0.90) 2.368 (−21.104 to 25.842) 29.92 23.380 14.79
Swing time (s) 0.833 0.75 (0.53–0.88) 0.86 (0.71–0.95) −0.021 (−0.075 to 0.033) 17.58 0.061 20.00
Left stride length (cm) 0.805 0.76 (0.53–0.88) 0.87 (0.76–0.93) −3.326 (−17.846 to 11.194) 20.11 10.230 14.21
Right stride length (cm) 0.912 0.83 (0.66–0.92) 0.91 (0.72–0.94) −4.346 (−13.119 to 4.427) 12.27 10.099 14.27
Left step length (cm) 0.840 0.80 (0.61–0.90) 0.89 (0.73–0.95) −1.544 (−8.167 to 5.079) 18.17 4.198 11.53
Right step length (cm) 0.737 0.69 (0.42–0.84) 0.82 (0.65–0.92) −2.108 (−10.656 to 6.441) 24.21 5.127 14.66
Velocity (cm/s) 0.793 0.77 (0.57–0.88) 0.77 (0.55–0.89) −1.276 (−15.966 to 13.413) 31.24 13.674 14.64
  1. Pearson’s correlation (\(\rho\)), CCC, ICC, Bland-Altman bias and LoA’s, percentage error (PE) (computed as \(100 \times (4 \text { SD of bias})/ (\text {Mean}_{\text {Kinect-A}} + \text {Mean}_{\text {GAITRite}})\)), and repeatability coefficients for the automatic estimation method (Kinect-A)