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.
Journal of the Medical Association of Thailand 94(2): 179-184
2011
ISSN/ISBN: 0125-2208 PMID: 21534364 Document Number: 15994
To validate the Thai version of the Scale for Outcomes in Parkinson 's disease-Sleep Scale (SCOPA-Sleep scale)for assessment of nighttime sleep problems (NSP) and daytime sleepiness (DS). A Thai version of SCOPA-Sleep scale has been developed with the permission of the originator. Fifty-one patients with Parkinson's disease were asked to complete the Thai SCOPA-Sleep scale (consisting of NSP and DS sections), plus the Pittsburg Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS). A second group of twenty patients completed the Thai SCOPA-Sleep scale, twice, two weeks apart. The reliability and validity were subsequently analyzed. The Thai SCOPA-Sleep scale showed a Cronbach 's alpha coefficient of 0.87 and 0.74 for SCOPA-NSP and SCOPA-DS, respectively with no significant difference between initial and follow-up scores. The content validity of SCOPA-NSP and SCOPA-DS were 0.9 and 0.9, respectively. There was a strong correlation between the Thai SCOPA-NSP and PSQI as well as the Thai SCOPA-DS and ESS (p < 0.01 and p < 0.01, respectively). The Thai SCOPA-Sleep scale is a reliable, valid instrument for assessing NSP and DS
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