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Original ArticleOpen Access
Validation of the Thai SCOPA-Sleep Scale for Assessment of Sleep and Sleepiness in Patients with Parkinson’s Disease
Setthawatcharawanich S 
,
Limapichat K ,
Sathirapanya P ,
Phabphal K
,
Limapichat K ,
Sathirapanya P ,
Phabphal K Objective: To validate the Thai version of the Scale for Outcomes in Parkinson’s disease-Sleep Scale (SCOPA-Sleep scale) forassessment of nighttime sleep problems (NSP) and daytime sleepiness (DS).
Material and Method: A Thai version of SCOPA-Sleep scale has been developed with the permission of the originator. Fiftyonepatients with Parkinson’s disease were asked to complete the Thai SCOPA-Sleep scale (consisting of NSP and DSsections), plus the Pittsburg Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS). A second group of twentypatients completed the Thai SCOPA-Sleep scale, twice, two weeks apart. The reliability and validity were subsequentlyanalyzed.
Results: The Thai SCOPA-Sleep scale showed a Cronbach’s alpha coefficient of 0.87 and 0.74 for SCOPA-NSP and SCOPADS,respectively with no significant difference between initial and follow-up scores. The content validity of SCOPA-NSP andSCOPA-DS were 0.9 and 0.9, respectively. There was a strong correlation between the Thai SCOPA-NSP and PSQI as wellas the Thai SCOPA-DS and ESS (p < 0.01 and p < 0.01, respectively).
Conclusion: The Thai SCOPA-Sleep scale is a reliable, valid instrument for assessing NSP and DS.
Keywords: Thai SCOPA-Sleep scale, Parkinson’s disease, Nighttime sleep problem, Daytime sleepiness
Material and Method: A Thai version of SCOPA-Sleep scale has been developed with the permission of the originator. Fiftyonepatients with Parkinson’s disease were asked to complete the Thai SCOPA-Sleep scale (consisting of NSP and DSsections), plus the Pittsburg Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS). A second group of twentypatients completed the Thai SCOPA-Sleep scale, twice, two weeks apart. The reliability and validity were subsequentlyanalyzed.
Results: The Thai SCOPA-Sleep scale showed a Cronbach’s alpha coefficient of 0.87 and 0.74 for SCOPA-NSP and SCOPADS,respectively with no significant difference between initial and follow-up scores. The content validity of SCOPA-NSP andSCOPA-DS were 0.9 and 0.9, respectively. There was a strong correlation between the Thai SCOPA-NSP and PSQI as wellas the Thai SCOPA-DS and ESS (p < 0.01 and p < 0.01, respectively).
Conclusion: The Thai SCOPA-Sleep scale is a reliable, valid instrument for assessing NSP and DS.
Keywords: Thai SCOPA-Sleep scale, Parkinson’s disease, Nighttime sleep problem, Daytime sleepiness
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