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)