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Rush Dyskinesia Rating Scale (RDRS)
Please visit this website for more information about the instrument: Rush Dyskinesia Rating Scale
The instrument is freely available for Individual/Personal use. Permission is required to use this instrument for any other purpose than individual use. This includes clinical trials and training programs. For all other uses please consult the permission form located on the first page of the Scale.
Supplemental: Parkinson's Disease (PD)
Short Description of Instrument
The Rush Dyskinesia Rating Scale (RDRS) is a disability assessment and was developed and clinimetrically tested prior to its 2013 presentation. The RDRS is a clinician rated outcome and assesses the severity of dyskinesia based on interference from dyskinesia during three standardized motor tasks. The rater observes the patient walking, drinking from a cup, and putting on and buttoning a coat. The greatest degree to which dyskinesia interferes with function is rated on a 0 to 4 scale Likert scale. The scale contains items similar to the Obeso Dyskinesia Rating Scale and was modified and adapted into the Unified Dyskinesia Rating Scale.
Scoring and Psychometric Properties
Scoring: Scoring follows a 5-point Likert metric with the following descriptors: 0=absent; 1=minimal severity, no interference with voluntary motor acts; 2=dyskinesia may impair voluntary movements but patient is normally capable of undertaking most motor acts; 3= intense interference with movement control and daily life activities are greatly limited; and 4=violent dyskinesia, incompatible with any normal motor task. In addition, the rater indicates which types of dyskinesia (chorea, dystonia, other) are present and which single type is most disabling.
Psychometric Properties: The RDRS items were tested clinimetrically within the context of scale validation and demonstrated acceptable levels of internal consistency, inter- and intra-rater reliability. In a study of inter- and intra-rater reliability, combined physician and coordinator ratings exhibited high reliability for severity of dyskinesia. The scale also has been rated highly for its ease of application, appropriateness of tasks for reflecting disability, and overall utility. It is one of the Recommended dyskinesia rating according to the International Parkinson and Movement Disorder Society (MDS).
Key Reference:
Colosimo C, Martínez-Martín P, Fabbrini G, Hauser RA, Merello M, Miyasaki J, Poewe W, Sampaio C, Rascol O, Stebbins GT, Schrag A, Goetz CG. Task force report on scales to assess dyskinesia in Parkinson's disease: critique and recommendations. Mov Disord. 2010 Jul 15;25(9):1131-42.
Additional References:
Goetz CG, Stebbins GT, Chung KA, Hauser RA, Miyasaki JM, Nicholas AP, Poewe W, Seppi K, Rascol O, Stacy MA, Nutt JG, Tanner CM, Urkowitz A, Jaglin JA, Ge S. Which dyskinesia scale best detects treatment response? Mov Disord. 2013 Mar;28(3):341-6.
Peterson DA, Berque P, Jabusch HC, Altenmüller E, Frucht SJ. Rating scales for musician's dystonia: the state of the art. Neurology. 2013 Aug 6;81(6):589-98.
Document last updated August 2022