German Translation and Validation of the “Freezing of Gait Questionnaire” in Patients with Parkinson’s Disease

Background . Freezing of Gait (FOG) is a disabling parkinsonian symptom. The Freezing of Gait Questionnaire (FOG-Q) reliably detects FOG in patients with Parkinson’s disease (PD). Objectives . The aim of this study was to develop a German translated version of the FOG-Q and to assess its validity. Methods . The translation was accomplished using forward-backward-translation. The construct validity of the FOG-Q was examined in twenty-seven German...