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Measurement Characteristics and Clinical Utility of the Freezing of Gait Questionnaire in Individuals With Parkinson Disease

Published:August 17, 2017DOI:https://doi.org/10.1016/j.apmr.2017.04.027
      Parkinson disease (PD) is one of the most common neurodegenerative conditions and affects >10 million people worldwide.1. 2. Freezing of gait (FOG) is a commonly observed symptom in individuals with PD,3 with prevalence rates ranging between 20% and 40%.4. 5. 6. The Freezing of Gait Questionnaire (FOGQ) is a 6-item questionnaire used to assess FOG severity in patients with PD.7. 8. A 5-point scale, 0 (absence of symptoms) to 4 (most severe), is used for each item to rank symptom severity.7 The FOGQ total score ranges from 0 to 24 (higher scores correspond to more severe FOG), has demonstrated excellent reliability,7. 8. and has demonstrated adequate to excellent criterion validity with other PD-specific measurement tools.7. 9. 10. Additionally, the FOGQ has been shown to be more sensitive in detecting FOG than the Unified Parkinson's Disease Rating Scale.7 The FOGQ can be administered and scored in <10 minutes, making it a clinically useful and low-burden instrument. The FOGQ is free to use, is available in several languages, and has been recommended by the Neurology Section of the American Physical Therapy Association's Parkinson's Taskforce.
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