Walking orientation randomness metric (WORM) score: pilot study of a novel gait parameter to assess walking stability and discriminate fallers from non-fallers using wearable sensors

Table 3 AUC values of ROC curves for gait parameters in discriminating between Fallers and Non-Fallers

	AUC	Std. Error	95% Confidence Interval		P
	AUC	Std. Error	Upper Bound	Lower Bound	P
Spatial Gait Metrics
Gait Velocity (m/s)	0.910	0.051	1.000	0.810	< 0.001
Step Length (cm)	0.801	0.079	0.955	0.647	0.004
Rhythm/Temporal Gait Metrics
Step Time (ms)	0.938	0.045	1.000	0.849	< 0.001
Gait Asymmetry
Step Time Asymmetry (ms)	0.902	0.060	1.000	0.787	0.001
Step Length Asymmetry (cm)	0.684	0.095	0.870	0.497	0.077
Gait Variability
Gait Velocity Variation (CV%)	0.904	0.056	1.000	0.794	0.001
Step Time Variation (CV%)	0.875	0.068	1.000	0.741	0.001
Step Length Variation (CV%)	0.825	0.079	0.981	0.670	0.002
Gait Stability
WORM	0.965	0.028	1.000	0.9108	< 0.001

AUC Area under the curve, ROC Receiver Operating Characteristic, Std. Error Standard Error, CV% Coefficient of variance* 100, WORM Walking Orientation Randomness Metric

ISSN: 1471-2474