Table 5.

Baseline beta band multivariate analyses according to ROI.

Variables	Beta-coefficient	95% CI	p-value	R2
Frontal region				0.240
WOMAC pain scale	0.013	0.003 to 0.024	0.010
Upper limb PPT	0.031	0.012 to 0.050	0.002
Kellgren–Lawrence scale	0.033	0.004 to 0.062	0.027
Bilateral affectation	0.024	− 0.026 to 0.074	0.343
HAD-depression scale	− 0.008	− 0.020 to 0.003	0.133
Central region				0.161
Kellgren–Lawrence scale	0.044	0.012 to 0.075	0.007
Timed up and go score	− 0.004	− 0.008 to − 0.0003	0.037
CSP average	− 0.001	− 0.002 to 0.00005	0.063
WOMAC stiffness scale	0.006	− 0.010 to 0.022	0.471
Parietal region				0.259
CSP average	− 0.001	− 0.002 to − 8.520	0.048
Kellgren–Lawrence scale	0.064	0.029 to 0.099	0.001
Berg balance scale	0.006	0.002 to 0.011	0.006
Bilateral affectation	0.027	− 0.025 to 0.080	0.299