↵^a Mean and standard deviation are given for normally distributed data: UPDRS-III=Unified Parkinson's Disease Rating Scale–part III, LED=levodopa equivalent dose, ABC=Activities-specific Balance Confidence scale, SCOPA-Cog=Scales for Outcomes in Parkinson's Disease–Cognition, ANT=Alternating Names Test, AIT=Alternating Intakes Test. Median and interquartile range (IQR) are given for non-normally distributed data: H&Y=Hoehn and Yahr stage, FOGQ=Freezing of Gait Questionnaire. In case of non-normally distributed data, the Wilcoxon signed rank test is presented instead of the t-test value to indicate the difference between the tests. * Significant at α<.05. ** Significant at α<.01.