Table 6.

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

	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

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