Subjective perception of sleep benefit in Parkinson's disease: Valid or irrelevant?

Abstract

Introduction The phenomenon of sleep benefit (SB) in Parkinson's disease (PD), whereby waking motor function is improved despite no dopaminergic treatment overnight, is controversial. Previous studies suggested a significant discrepancy between subjective functional and objective motor improvement. The aim of this study was to determine how well subjective reporting of SB correlates with objective measures and if true motor improvement can be predicted by a standardized questionnaire. Methods Ninety-two patients with PD participated. A structured questionnaire was developed to assess subjective SB. Quantitative motor assessment was performed using a validated smartphone application. Objectiv..