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a. Boxplots showing the ANOVA results of the four groups based on the Ax-CCM classification system. Differences between groups were analyzed with post hoc t-test when the ANOVA showed significant difference among groups. b. Student’s t-test results of patients’ N13_E or N_13F in “Stable” and “Unstable” groups based on dynamic X-ray studies. * p_value< 0.05; ** p_value< 0.01; *** p_value< 0.001
