Fig. 4
Correlation matrix plot showing inter-variable unadjusted Spearman correlations and distribution of freezing of gait-related parameters. The numbers on the matrix plot show Spearman’s rho. Red and blue numbers indicate statistically significant positive and negative rho values, respectively. DisDur disease duration, HY Hoehn & Yahr, UPDRS-III part III total score of Movement Disorder Society-sponsored revision of the Unified Parkinson’s Disease Rating Scale, NFOGQ New Freezing of Gait Questionnaire total score, RRO occurrence reduction rate, RRD mean reduction rate of duration, RRP reduction rate of proportion of FOG duration in the total gait cycles, AntPut Anterior putamen, PostPut Posterior putamen, VentPut Ventral putamen, AntCaud Anterior caudate, PostCaud Posterior caudate, VentStr Ventral striatum