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Table 6 Ability of gait parameters to discriminate between fallers and non-fallers

From: Gait analysis with the Kinect v2: normative study with healthy individuals and comprehensive study of its sensitivity, validity, and reliability in individuals with stroke

 

Higher fall risk

Lower fall risk

Statistical significance

ROC

Speed (m/s)

0.55 (0.32)

1.00 (0.23)

p = 0.000

0.866

Stride length (m)

0.76 (0.37)

1.14 (0.20)

p = 0.000

0.826

Stride time (s)

1.52 (0.32)

1.17 (0.15)

p = 0.000

0.857

Step length (m)

0.38 (0.18)

0.57 (0.10)

p = 0.000

0.833

Step time (s)

0.75 (0.15)

0.58 (0.07)

p = 0.000

0.846

Step width (m)

0.21 (0.07)

0.17 (0.05)

p = 0.015

0.668

Cadence (step/min)

81.88 (15.71)

103.92 (12.51)

p = 0.000

0.858

Step asymmetry (m)

0.09 (0.05)

0.07 (0.10)

p = 0.401

0.685

Swing time (s)

0.31 (0.14)

0.40 (0.08)

p = 0.003

0.715

Double support time (s)

0.56 (0.18)

0.37 (0.17)

p = 0.000

0.797

Trunk obliquity (°)

9.54 (4.72)

5.90 (2.14)

p = 0.000

0.759

Trunk tilt (°)

11.53 (5.02)

7.75 (2.14)

p = 0.000

0.762

Trunk rotation (°)

22.50 (7.89)

20.09 (7.13)

p = 0.228

0.612

Pelvic obliquity (°)

9.83 (3.40)

8.50 (2.15)

p = 0.052

0.590

Pelvic tilt (°)

25.24 (12.35)

20.03 (7.15)

p = 0.029

0.606

Pelvic rotation (°)

15.67 (6.81)

14.67 (5.95)

p = 0.552

0.541

Hip abduction-adduction (°)

13.43 (3.43)

11.95 (2.31)

p = 0.039

0.612

Hip flexion-extension (°)

45.97 (10.91)

53.54 (7.79)

p = 0.002

0.725

Hip height variation (cm)

0.06 (0.03)

0.13 (0.22)

p = 0.189

0.651

Knee valgus-varus alignment (°)

18.75 (6.69)

20.05 (5.13)

p = 0.390

0.577

Knee flexion-extension (°)

44.35 (8.07)

46.12 (11.36)

p = 0.552

0.549

Knee height variation (cm)

0.13 (0.10)

0.13 (0.14)

p = 0.972

0.575

Ankle height variation (cm)

0.14 (0.04)

0.21 (0.10)

p = 0.004

0.760

  1. Significant correlations of variable strength emerged between spatiotemporal and kinematic parameters obtained by the Kinect v2-based gait analysis and standardized clinical scales. ROC: receiver operating characteristic