Impact of age on the postural stability measured by a virtual reality tracker-based posturography and a pressure platform system

Liang, Huey-Wen; Chi, Shao-Yu; Tai, Tzu-Ling; Li, Yue-Hua; Hwang, Yaw-Huei

doi:10.1186/s12877-022-03195-0

Table 2 The results of receiver operating characteristic analysis of the center of pressure and trunk displacement parameters in differentiating the two age groups

From: Impact of age on the postural stability measured by a virtual reality tracker-based posturography and a pressure platform system

		area under curve	p value	cut point	sensitivity	specificity
Center of pressure
wide-based, eyes open	distance-ML	0.69	0.01	1.36	0.89	0.48
	distance-AP	0.70	0.01	4.43	0.59	0.78
	velocity-ML	0.64	0.08	4.51	0.56	0.81
	velocity-AP	0.81	0.00	5.8	0.70	0.93
	AREA-CE	0.71	0.01	103.85	0.89	0.55
wide-based, eyes closed	distance-ML	0.76	0.00	1.66	0.70	0.74
	distance-AP	0.72	0.01	3.82	0.70	0.78
	velocity-ML	0.68	0.03	5.12	0.59	0.78
	velocity-AP	0.81	0.00	6.81	0.81	0.71
	AREA-CE	0.78	0.00	158.25	0.81	0.71
narrow-based, eyes open	distance-ML	0.72	0.01	3.68	0.74	0.63
	distance-AP	0.55	0.53	3.89	0.52	0.67
	velocity-ML	0.82	0.00	7.94	0.78	0.78
	velocity-AP	0.78	0.00	7.13	0.67	0.81
	AREA-CE	0.66	0.04	382.03	0.78	0.59
narrow-based, eyes closed	distance-ML	0.75	0.00	4.71	0.63	0.85
	distance-AP	0.66	0.05	3.69	0.85	0.63
	velocity-ML	0.85	0.00	10.90	0.67	0.92
	velocity-AP	0.81	0.00	10.74	0.56	0.96
	AREA-CE	0.72	0.01	494.30	0.74	0.74
tracker-based trunk displacement
wide-based, eyes open	distance-ML	0.69	0.02	1.36	0.85	0.48
	distance-AP	0.68	0.02	2.46	0.85	0.48
	velocity-ML	0.78	0.00	2.27	0.63	0.85
	velocity-AP	0.77	0.00	2.71	0.81	0.67
	AREA-CE	0.72	0.01	103.13	0.85	0.59
wide-based, eyes closed	distance-ML	0.70	0.01	1.67	0.81	0.60
	distance-AP	0.67	0.03	3.08	0.74	0.59
	velocity-ML	0.72	0.00	2.04	0.89	0.52
	velocity-AP	0.79	0.00	2.89	0.93	0.66
	AREA-CE	0.72	0.00	165.1	0.74	0.70
narrow-based, eyes open	distance-ML	0.71	0.01	3.04	0.89	0.52
	distance-AP	0.53	0.74	3.15	0.70	0.49
	velocity-ML	0.83	0.00	3.33	0.96	0.71
	velocity-AP	0.76	0.00	3.23	0.85	0.74
	AREA-CE	0.63	0.11	232.15	0.93	0.37
narrow-based, eyes closed	distance-ML	0.69	0.02	3.27	0.81	0.52
	distance-AP	0.62	0.14	3.35	0.78	0.59
	velocity-ML	0.85	0.00	4.38	0.78	0.85
	velocity-AP	0.77	0.00	3.89	0.74	0.82
	AREA-CE	0.67	0.04	391.2	0.67	0.70

Note: ML Medial–lateral direction, AP Anterior–posterior direction, AREA-CE: 95% confidence ellipse area

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ISSN: 1471-2318

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