title: Modified Parkinson's Disease Sleep Scale (MPDSS) in Thai Parkinson's disease patients.
abstract: BACKGROUND
  Parkinson's Disease Sleep Scale (PDSS) has been recently developed for clinical evaluation of sleep problems in PD. The modified PDSS (MPDSS) has been developed in the presented study.
  
  
  OBJECTIVE
  To evaluate the usefulness of MPDSS and sleep problems in Thai PD patients.
  
  
  METHODS
  A cross sectional study in 50 PD patients was conducted at King Chulalongkorn Memorial Hospital. Sleep problems were assessed by the MPDSS, which has more items to cover more aspects of sleep problems in PD than PDSS.
  
  
  RESULTS
  MPDSS showed good reliability (Cronbach's Alpha = 0.842). Some Problems regarding the clinical use of MPDSS in Thai patients were detected especially related to the meaning of visual analogue scale. Self-assessment of sleep in PD patients reveal sleep problems only 58%, while MPDSS probed sleep problems in 76% of PD patients. Nocturnal motor symptoms, snoring, sleep initiation and maintenance problem and nocturia were common in Thai PD patients. Disease staging had significant correlation with MPDSS. Prevalence of sleep disorders and trend of each score in PDSS were similar to previous studies in Western countries.
  
  
  CONCLUSIONS
  MPDSS is useful for screening and evaluation of sleep problems in Thai PD patients. Nevertheless, some modifications, especially the visual analogue scale, may be needed to simplify its practical utility. Prevalence and trend of sleep problems in Thai PD patients were similar to the previous studies in Western countries.
authors.affiliation: Division of Medical Oncology, Department of Medicine, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand. surbpong@yahoo.com
authors.forename: Suebpong
authors.initials: S
authors.lastname: Tanasanvimon
authors.forename: Nipan Israsena Na
authors.initials: NI
authors.lastname: Ayuthaya
authors.forename: Kammant
authors.initials: K
authors.lastname: Phanthumchinda
mesh_terms: D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D010147:Pain Measurement; D010300:Parkinson Disease / Q000150:complications* / Q000453:epidemiology / Q000503:physiopathology; D015995:Prevalence; D015203:Reproducibility of Results; D012307:Risk Factors; D012890:Sleep; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000209:etiology*; D011795:Surveys and Questionnaires; D013785:Thailand / Q000453:epidemiology