{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T18:05:06Z","timestamp":1778781906465,"version":"3.51.4"},"reference-count":34,"publisher":"Georg Thieme Verlag KG","issue":"02","license":[{"start":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T00:00:00Z","timestamp":1741651200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sleep Sci"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n               Objective\u2003To translate, cross-culturally adapt, and validate the Brazilian version of the Parkinson's Disease Sleep Scale-2 (PDSS-2\/BR).<\/jats:p><jats:p>\n               Methods\u2003This cross-sectional study addressed 80 patients with PD, and it was organized into two phases: 1) Translation and cross-cultural adaptation, which included 30 individuals in the scale's pretest stage and 2) Validation, when 50 individuals were assessed by the PDSS-2\/BR, Pittsburgh Sleep Quality Index (PSQI), Parkinson's Disease Questionnaire-39 (PDQ-39), MDS-Unified Parkinson's Disease Rating Scale (MDS-UPDRS), and Hoehn and Yahr rating scale (HY); the PDSS-2\/BR was retested 7 days later. The significance level was set at 5%.<\/jats:p><jats:p>\n               Results\u2003The participants rated the PDSS-2\/BR as having more than 90% comprehension. It also showed good reliability (Cronbach's alpha\u2009=\u20090.782) and excellent test\u2013retest reliability (ICCinterrater\u2009=\u20090.901; p\u2009=\u20090.570; ICCintrarater\u2009=\u20090.905; p\u2009=\u20090.116). Additionally, the scale showed good precision, with low standard error of measurement (SEMinter\u2009=\u20091.040; SEMintra\u2009=\u20090.908), and moderate to strong correlation with the PSQI, MDS-UPDRS, and PDQ-39 scales (rho\u2009=\u20090.46\u20130.74); only the HY scale showed no correlation.<\/jats:p><jats:p>\n               Discussion\u2003The PDSS-2\/BR is a reliable, precise, and valid instrument for evaluating sleep among Brazilian individuals with PD. Hence, it is expected to help researchers and clinicians improve the investigation of these symptoms, promoting early and assertive diagnoses and guiding the treatment and clinical management of this population.<\/jats:p>","DOI":"10.1055\/s-0044-1791977","type":"journal-article","created":{"date-parts":[[2025,3,11]],"date-time":"2025-03-11T21:02:56Z","timestamp":1741726976000},"page":"e182-e189","source":"Crossref","is-referenced-by-count":1,"title":["Parkinson's Disease Sleep Scale-2: The Brazilian Version's Cross-Cultural Adaptation and Validation"],"prefix":"10.1055","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8347-1921","authenticated-orcid":false,"given":"Rog\u00e9rio Jos\u00e9 de","family":"Souza","sequence":"additional","affiliation":[{"name":"Program of Master's and Doctor's Degree in Rehabilitation Sciences, Universidade Estadual de Londrina, Londrina, PR, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amanda dos Santos","family":"Siqueira","sequence":"additional","affiliation":[{"name":"Neurofunctional Physical Therapy Research Group (GPFIN), Universidade Estadual de Londrina (UEL), Londrina, PR, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lu\u00edsa Vigiani","family":"Cassiano","sequence":"additional","affiliation":[{"name":"Neurofunctional Physical Therapy Research Group (GPFIN), Universidade Estadual de Londrina (UEL), Londrina, PR, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tais Caroline Oliveira da","family":"Silva","sequence":"additional","affiliation":[{"name":"Program of Master's and Doctor's Degree in Rehabilitation Sciences, Universidade Estadual de Londrina, Londrina, PR, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9048-9799","authenticated-orcid":false,"given":"Suhaila Mahmoud","family":"Smaili","sequence":"additional","affiliation":[{"name":"Program of Master's and 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