Parkinson's disease sleep scale-validation of the revised version PDSS-2

Background: The previous Parkinson's disease sleep scale (PDSS) is a 15‐item visual analogue scale that assesses the profile of nocturnal disturbances in Parkinson's disease (PD) patients. Objective: To extend the scale so that it becomes a frequency measure scale with five categories and...

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Vydáno v:Movement disorders Ročník 26; číslo 4; s. 644 - 652
Hlavní autoři: Trenkwalder, Claudia, Kohnen, Ralf, Högl, Birgit, Metta, Vinod, Sixel-Döring, Friederike, Frauscher, Birgit, Hülsmann, Julia, Martinez-Martin, Pablo, Chaudhuri, Kallol Ray
Médium: Journal Article
Jazyk:angličtina
Vydáno: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.03.2011
Wiley Subscription Services, Inc
Témata:
Adult
Aged
Aged, 80 and over
Factor Analysis, Statistical
Female
Humans
Male
Middle Aged
MOS
Movement disorders
nocturnal disturbance
Parkinson Disease - complications
Parkinson's disease
PDSS
Reproducibility of Results
Severity of Illness Index
sleep
Sleep Wake Disorders - diagnosis
Sleep Wake Disorders - etiology
Statistics as Topic
Surveys and Questionnaires
UPDRS
validation
ISSN:0885-3185, 1531-8257, 1531-8257
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Shrnutí:Background: The previous Parkinson's disease sleep scale (PDSS) is a 15‐item visual analogue scale that assesses the profile of nocturnal disturbances in Parkinson's disease (PD) patients. Objective: To extend the scale so that it becomes a frequency measure scale with five categories and encompasses unmet needs such as restless legs syndrome, akinesia, pain, and sleep apnea. Methods: For validation of the PDSS‐2, PD patients' ratings and investigators' interviews were compared to ratings from a semistructured interview with a caregiver/partner, and to related scales. PDSS‐2 was repeated for test‐retest‐reliability after 1–3 days. Results: A total of 113 PD patients showed a mean (SD) total score of 16.5 (±8.9) (range: 2–40) indicating mild to moderate sleep disturbances. PDSS‐2 item‐total correlation for proving internal consistency was satisfactory (correlations >0.30). From a factor analysis, three subscales were derived: (1) “motor problems at night,” (2) “PD symptoms at night” and (3) “disturbed sleep.” The alpha coefficient for the total score was 0.73, for subscales 0.47 to 0.66. The test‐retest‐reliability intra‐class‐coefficient for the total score was 0.80, with 0.69 and 0.77 within the subscales. For discriminative validity, significant differences were found in the PDSS‐2 total score depending on CGI and Hoehn and Yahr severity levels. A comparison between caregivers' and patients' ratings was carried out. Conclusion: The PDSS‐2, with an extended spectrum of nocturnal disabilities and easier use for patients, is a reliable, valid, precise, and potentially treatment‐responsive tool for measuring sleep disorders in PD. © 2011 Movement Disorder Society
Bibliografie:ArticleID:MDS23476
istex:868E1244F07D5212CAB8F1057CC6C2E61C372911
ark:/67375/WNG-Q5HR7JJ9-S
Relevant conflict of interest/financial disclosure: Nothing to report. Full financial disclosures and author roles can be found in the online version of this article.
Author Roles and Disclosures
Relevant conflict of interest/financial disclosure
Nothing to report. Full financial disclosures and author roles can be found in the online version of this article.
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SourceType-Scholarly Journals-1
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ISSN:0885-3185
1531-8257
1531-8257
DOI:10.1002/mds.23476