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ORIGINAL ARTICLE
J Korean Sleep Res Soc. 2012;9(2):34-40.         doi: https://doi.org/10.13078/jksrs.12008
The Influence of Physical Discomfort and Sleep Disturbance on the Quality of Life in Patients with Restless Legs Syndrome: A Comparison with Chronic Osteoarthritis
Geun Tae Kim, Sang-Hyon Kim, Mei Ling Song, and Yong Won Cho
1Departments of Neurology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
2Rheumatology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
3Department of Nursing Graduate School, Keimyung University, Daegu, Korea
Corresponding Author: Yong Won Cho ,Tel: +82-53-250-7830, Fax: +82-53-250-7840, Email: neurocho@gmail.com
Received: 26 November 2012;  Accepted: 16 December 2012.
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ABSTRACT
Objectives: The patients with restless legs syndrome (RLS) had a lower quality of life (QOL) than normal controls. However, it’s debatable which affects their QOL more, disturbing pain or poor sleep quality. We investigated the factors that influence the QOL in patients with RLS, and compared the results to those of patients with chronic osteoarthritis (OA) who were having similar physical discomfort.
Methods: This is a prospective case-control study comparing the QOL of 153 RLS patients with those of 153 OA patients. To evaluate the degree of physical discomfort, the QOL and the quality of sleep, all subjects completed various questionnaires, which included the SF-36, the Visual Analogue Scale for pain, Korean versions of the Pittsburg Sleep Quality Index and the Epworth Sleepiness Scale, and the insomnia severity index. We used the χ2-test, t-test, analysis of covariance, Pearson’s correlation, multiple stepwise regression methods for analysis.
Results: The QOL in patients with RLS was higher than those with OA, though pain severity (physical discomfort) was similar in both groups. However, the quality of sleep in RLS patients was poorer than those with OA. Through multiple stepwise regression analysis, we can recognize that the most important factor affecting the QOL in RLS patients was the severity of their physical symptoms.
Conclusions: We found the quality of sleep had less of an influence on the QOL than the physical discomfort of the patients with RLS.
Keywords: Restless legs syndrome | Osteoarthritis | Sleep quality | Quality of life.
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