Skip to main content

Table 3 Correlation coefficient, p value and confidence interval between gait parameters and CKD severity (n = 45)

From: Gait disorders in CKD patients: muscle wasting or cognitive impairment? A cross-sectional pilot study to investigate gait signatures in Stage 1–5 CKD patients

  Pearson' r
(p value) [95% CI]
Spearman's rs
(p value) [95% CI]
Regression coefficient
(p value) [95% CI]
Spatio-temporal parameters
 Gait speed (m/s) -0.55 (p < 0.01) [-0.73;-0.30] -0.53 (p < 0.01) [-0.72;-0.28] -0.07 (p < 0.01) [-0.12;-0.02]
 Cadence (steps/min) -0.18 (p = 0.23) [-0.45;0.12] -0.14 (p = 0.34) [-0.44;0.16] -0.51 (p = 0.70) [-3.2;2.2]
 Stride time (s) 0.22 (p = 0.15) [-0.08;0.48] 0.15 (p = 0.33) [-0.20;0.43] 0.01 (p = 0.52) [-0.02;0.04]
 Stride length (m) -0.40 (p < 0.01) [-0.62;-0.12] -0.39 (p < 0.01) [-0.62;-0.13] -0.06 (p = 0.05) [-0.11;-0.001]
 Step time (s) 0.21 (p = 0.16) [-0.09;0.47] 0.14 (0.37) [-0.17;0.44] 0.004 (p = 0.55) [-0.01;0.02]
 Step length (m) -0.41 (p < 0.01) [-0.63;-0.13] -0.39 (p < 0.01) [-0.62;-0.10] -0.03 (p = 0.04) [-0.06;-0.001]
Variability
 CV Stride time 0.22 (p = 0.18) [-0.08;0.48] 0.29 (p = 0.05) [0.02;0.52] 0.29 (p = 0.31) [-0.28;0.86]
 CV Stride length 0.19 (p = 0.20) [-0.11;0.46] 0.22 (p = 0.14) [-0.05;0.45] 0.34 (p = 0.37) [-0.41;1.10]
 CV Step time 0.02 (p = 0.90) [-0.28;0.31] 0.13 (p = 0.39) [-0.22;0.42] 0.36 (p = 0.52) [-0.76;1.48]
 CV Step length 0.36 (p = 0.01) [0.08;0.59] 0.37 (p = 0.01) [0.06;0.64] 1.42 (p = 0.02) [0.21;2.62]
 Gait regularity -0.38 (p < 0.01) [-0.61;-0.10] -0.48 (p < 0.01) [-0.69;-0.23] -0.02 (p = 0.06) [-0.05;0.001]
Dual-task cost of gaita
 Gait speed (%) 0.40 (p < 0.01) [0.13;0.62] 0.34 (p = 0.02) [0.03;0.59] 2.52 (p = 0.03) [0.32;4.72]
 Cadence (%) 0.28 (p = 0.07) [-0.02;0.53] 0.20 (p = 0.19) [-0.09;0.50] 1.10 (p = 0.13) [-0.35;2.55]
 Stride time (%) 0.32 (p = 0.03) [0.03;0.57] 0.26 (p = 0.09) [-0.04;0.54] 1.71 (p = 0.06) [-0.05;3.47]
 Stride length (%) 0.12 (p = 0.43) [-0.18;0.40] 0.15 (p = 0.34) [-0.13;0.40] 0.85 (p = 0.36) [-0.99;2.70]
  1. an = 44 for Pearson's r and linear regression