Prediction of the Levodopa Challenge Test in Parkinson's Disease Using Data from a Wrist-Worn Sensor.

In this study the abs∆ PKG increase with disease duration, which is similar to reports of others using abs∆ UPDRS [ 4 , 34 ], whereas the abs∆ UPDRS showed only a weak trend to increase with disease and possibly the variation between different clinical reporters of the UPDRS III may have obscured this trend.

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