Concurrent validity of pain scales in individuals with myofascial pain and fibromyalgia |
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Authors: | Scott W Cheatham Morey J Kolber Monique Mokha William J Hanney |
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Institution: | 1. Director Pre-Physical Therapy Program, Division of Kinesiology and Recreation, SAC 1138, California State University Dominguez Hills, 1000 E. Victoria St. Carson, CA 90747, United States;2. Nova Southeastern University Department of Physical Therapy 3200 South University Drive Ft. Lauderdale, FL 33328, United States;3. Program Chair, Exercise and Sport Science, College of Health Care Sciences, Nova Southeastern University, 3301 College Ave., Davie, FL 33314, United States;4. University of Central Florida, Doctor of Physical Therapy Program, HPA 1 – Suite 258, Orlando, FL 32816, United States |
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Abstract: | ObjectiveClinicians and researchers often use the numeric pain rating scale (NPRS) and visual analog scale (VAS) to measure and track pain in individuals with myofascial pain syndrome (MPS) and fibromyalgia (FM). The VAS is often used as a reference standard in chronic pain research. To date, no studies have specifically measured the concurrent validity of the NPRS and VAS in these individuals. The purpose of this investigation was to determine the concurrent validity of the NPRS when compared to the reference standard VAS in patients with MPS and FM.MethodsThis investigation explored the concurrent validity of the NPRS and VAS in sixty participants with MPS (N = 30) and FM (N = 30). All participants underwent one day of testing using the American College of Rheumatology criteria for classifying FM. For each tender point (18-total), participants graded tenderness using the NPRS and VAS.ResultsAn excellent relationship was found between the NPRS and VAS for the MPS group (rho≥0.81, 95% CI 0.79-0.85, p < 0.001) and the FM group (rho ≥0.96, 95% CI 0.92-0.97, p < 0.001).ConclusionThe results of this study suggest that the NPRS has good concurrent validity with the referenced standard VAS among individuals with MPS and FM. |
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Keywords: | Corresponding author |
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