Table 8.

Parameters of the PS_COM task: discriminant power and correlation with UPDRS scores.

		Mann-Whitney U Test				Spearman Coefficient b
Name	Meaning (Unit)	Median HC	Median PD	Z	p-Value a	ρ	p-Value a
APr	CoM AP sway Range (cm)	0.59	1.13	1.80	7.20 × 10−2	0.59	3.24 × 10−3
APt	CoM AP sway Total (cm)	1.49	3.28	2.23	2.50 × 10−2	0.65	2.54 × 10−2
MLt	CoM ML sway Total (cm)	0.98	3.48	2.24	2.53 × 10−2	0.48	1.88 × 10−2
APv	CoM AP sway Velocity (cm/s)	0.72	1.32	1.86	6.34 × 10−2	0.56	4.92 × 10−2
MLv	CoM ML sway Velocity (cm/s)	0.48	1.49	2.24	2.53 × 10−2	0.42	4.25 × 10−2
SwayArea	CoM Sway Area (cm2)	0.30	0.85	1.58	1.13 × 10−1	0.59	2.92 × 10−3

^a Significance level p < 0.05; ^b The Spearman correlation was evaluated respect to the PS_PIGD subscale scores.