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The Parkinson’s KinetiGraph (PKG) is a digital measurement system for motor fluctuations (FS). The aim of this study is to investigate whether FS, measured by the PKG, are associated with disease duration of Parkinson’s Disease (PD) patients. Material and Methods: 172 PD were included. PKG measurements, clinical data and disease duration were collected. Patients were categorized in four disease duration categories (0 - 5 years, 6 - 7 years, 8 - 11 years and ≥12 years). Kruskal-Wallis and Mann-Whitney U tests were used for statistical analysis. Results: The mean age of the patients is 69.2 years (SD ± 8.13). Disease duration varies between 1 and 28 years. Significant difference was found between the four disease categories in FS (p = 0.050); between group 1 - 3, p = 0.005. Conclusions: As expected, FS measured by PKG increase during disease progression in PD. In advanced disease stages, FS stabilise, indicating that PKG is the most useful in early and moderate stages of PD.

Parkinson Kinetic Graph: Are Motor Fluctuations in Parkinson Disease Related with Disease Duration?