Abstract
BackgroundMotor impairment in Parkinson’s disease (PD) can be evaluated with the Short Parkinson’s Evaluation Scale/Scales for Outcomes in Parkinson’s disease (SPES/SCOPA) and the Movement Disorder Society-Unified Parkinson’s Disease Rating Scale (MDS-UPDRS). The aim of this study was to determine equation models for the conversion of scores from one scale to the other. Methods148 PD patients were evaluated with the SPES/SCOPA-motor and the MDS-UPDRS motor examination. Linear regression was used to develop equation models. ResultsScores on both scales were highly correlated (r = 0.88). Linear regression revealed the following equation models (explained variance: 78%):1.MDS-UPDRS motor examination score = 11.8 + 2.4 ∗ SPES/SCOPA-motor score2.SPES/SCOPA-motor score = −0.5 + 0.3 ∗ MDS-UPDRS motor examination score. ConclusionWith the equation models identified in this study, scores from SPES/SCOPA-motor can be converted to scores from MDS-UPDRS motor examination and vice versa.
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