title: Validation of the Thai SCOPA-sleep scale for assessment of sleep and sleepiness in patients with Parkinson's disease.
abstract: OBJECTIVE
  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).
  
  
  METHODS
  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.
  
  
  RESULTS
  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).
  
  
  CONCLUSIONS
  The Thai SCOPA-Sleep scale is a reliable, valid instrument for assessing NSP and DS
authors.affiliation: Division of Neurology, Department of Medicine, Songklanagarind Hospital, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand. ssuwanna@medicine.psu.ac.th
authors.forename: Suwanna
authors.initials: S
authors.lastname: Setthawatcharawanich
authors.forename: Kitti
authors.initials: K
authors.lastname: Limapichat
authors.forename: Pornchai
authors.initials: P
authors.lastname: Sathirapanya
authors.forename: Kanitpong
authors.initials: K
authors.lastname: Phabphal
mesh_terms: D000368:Aged; D044466:Asian People; D006970:Disorders of Excessive Somnolence / Q000150:complications* / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000150:complications* / Q000503:physiopathology*; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D012895:Sleep, REM / Q000502:physiology*; D011795:Surveys and Questionnaires; D013785:Thailand