Table 3.

Identification of subjects with unstable dynamic gait performance including Timed “Up & Go” > 11.1 s and dynamic gait index <20/24, using yaw and pitch plane gaze-stability test (GST) cutoff values

Identification category	GST plane	GST cutoff value (degree s−1)	Sensitivity (%)	Specificity (%)	Likelihood ratio	AUC (95% confidence interval)
TUG > 11.1 s	Yaw	<63	100	89	9.1	0.96* (0.89–1.0)
	Pitch	<65	100	82	5.6	0.91 (0.79–1.0)
DGI < 20/24	Yaw	<78	75	78	3.4	0.85* (0.67–1.0)
	Pitch	<65	75	82	4.2	0.80 (0.49–1.0)

Sensitivity, specificity, likelihood ratio, and area under receiver operating characteristic curves (AUC) are shown.

^*p < 0.05.