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Table 1 Concurrent validity between proposed and reference system for spatial and temporal gait parameters

From: The validity of spatiotemporal gait analysis using dual laser range sensors: a cross-sectional study

  Proposed system mean ± SD Reference system mean ± SD Absolute error mean ± SD Percentage of error (%) mean ± SD ICC (2,1) [95% CI] 95% LoA
Stance time (s) 0.744 ± 0.181 0.749 ± 0.136 0.087 ± 0.075 11.73 ± 9.92 0.74 [0.67 to 0.80] −0.23 to 0.22
Swing time (s) 0.420 ± 0.069 0.462 ± 0.055 0.066 ± 0.055 14.24 ± 11.61 0.23 [0.22 to 0.42] −0.19 to 0.11
Double support time (s) 0.188 ± 0.092 0.146 ± 0.057 0.062 ± 0.045 47.40 ± 38.46 0.56 [0.26 to 0.73] −0.09 to 0.17
Stride time (s) 1.205 ± 0.192 1.208 ± 0.189 0.064 ± 0.061 5.41 ± 5.19 0.89 [0.83 to 0.94] −0.18 to 0.17
Stride length (cm) 113.1 ± 18.48 114.04 ± 15.97 7.81 ± 6.34 6.75 ± 5.25 0.83 [0.74 to 0.89] −20.66 to 18.77
Step length (cm) 57.87 ± 10.48 57.78 ± 8.73 5.60 ± 4.75 9.50 ± 7.59 0.71 [0.60 to 0.79] −14.33 to 14.51
  1. SD standard deviation, ICC intraclass correlation coefficient, 95% CI: 95% confidence interval, 95%LoA: 95% limits of agreement