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Instrument for the Assessment of Restless Legs Syndrome Severity (IRLSSG-Rating Scale)
Availability
Classification
Supplemental: Parkinson's Disease (PD)
Short Description of Instrument
The Instrument for the Assessment of Restless Legs Syndrome Severity (IRLSSG-Rating Scale) is a generic instrument for the evaluation of Restless Leg Symptom (RLS) severity and change over time in patients diagnosed with RLS.
Scoring
Higher scores indicate a greater RLS severity.
Psychometric Properties
The IRLSSG was developed on the basis of repeated expert evaluation of potential  items. The scale was found to have high levels of internal consistency, inter-examiner reliability, test-retest reliability over a 2-4 week period, and convergent validity (in primary RLS). Scale meets performance criteria for a brief, patient completed instrument that can be used to assess RLS severity for purposes of clinical assessment, research, or therapeutic trials. The scale has been used in several studies in PD.
References
Abetz L, Arbuckle R, Allen RP, et al. The reliability, validity and responsiveness of the International Restless Legs Syndrome Study Group rating scale and subscales in a clinical-trial setting. Sleep Med 2006; 7:340-349.
 
Walters AS, LeBrocq C, Dhar A, et al. Validation of the International Restless Legs Syndrome Study Group rating scale for restless legs syndrome. Sleep Med 2003; 4:121- 132.
 
Wunderlich GR, Evans KR, Sills T, et al. An item response analysis of the international restless legs syndrome study group rating scale for restless legs syndrome. Sleep Med 2005; 6:131-139.
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