Table 2.

Spearman Coefficient Analysis for each feature in each combination of condition and population. Only values with significance level p < 0.05 are presented (ns indicates a combination of feature/condition for which Spearman coefficient was not significant). Values for ρ > 0.5 indicate high validity and are presented in bold

	Eyes-open - HS	Eyes-open - MS	Eyes-closed - HS	Eyes-closed – MS
Total Path	0.78	0.51	0.81	0.7
ML Path	ns	0.43	0.73	0.57
AP Path	0.79	0.59	0.78	0.73
ML Range	0.72	0.75	0.59	0.64
AP Range	ns	0.42	0.9	0.78
ML RMS	0.72	0.75	0.51	0.55
AP RMS	0.79	0.63	0.87	0.75
ML Average Disp	0.68	0.7	0.5	0.54
AP Average Disp	0.79	0.59	0.84	0.78
Swept Area	0.73	0.59	0.8	0.79
Sway Speed	0.78	0.51	0.7	0.7
ML Average Sp	ns	0.43	0.7	0.59
AP Average Sp	0.81	0.59	0.7	0.73
Max Radial Pos	0.82	0.6	0.93	0.76
Average Radial Pos	0.83	0.72	0.87	0.82
Area Ellipse	0.7	0.62	0.61	0.74
Ds	ns	0.28	0.71	0.71
<r2 CR>	0.42	ns	0.77	0.89