Fig. 4

Comparison of CoP parameters by clinical classification and cluster categorization. Left panel: Comparison by clinical classification. Right panel: Comparison of factor scores by clusters. All data are mean ± standard deviation (SD). *p < 0.05, **p < 0.01 by post-hoc test (Steel–Dwass test) in the Kruskal–Wallis test. A Comparison of spatiotemporal parameters (Area and MV). B Comparison of power-spectrum parameters by anterior–posterior direction (SLPL_AP and SLPH_AP). Each left part: PSD log plot from 0.15 to 10 Hz. The blue line is the regression line for 0.15–1 Hz, and the red line is the regression line for 1–5 Hz. C Comparison of results of the stabilogram diffusion analysis (SDA). Each left part: Linear stabilogram diffusion plots in CoP displacements in the planar direction