ArticleJournal of clinical neurology (Seoul, Korea)2020
Subtypes of Sleep Disturbance in Parkinson's Disease Based on the Cross-Culturally Validated Korean Version of Parkinson's Disease Sleep Scale-2.
Article in Journal of clinical neurology (Seoul, Korea), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 14 citations in OpenAlex.
- Clinical Outcome Assessments in Parkinson's Disease: A Scoping Review of Current Rating Scales and Future Needs.Movement disorders clinical practice · 2026Article
- Association of Sleep Hygiene Practice With Disturbed Sleep in Early-Stage Parkinson's Disease.Journal of clinical neurology (Seoul, Korea) · 2026Article
- Opicapone for the Treatment of Nocturnal Hypokinesia in Patients With Parkinson's Disease: An Open-Label Pilot Clinical Trial.Journal of movement disorders · 2026Article
- Parkinson's Disease Sleep Scale-2: The Brazilian Version's Cross-Cultural Adaptation and Validation.Sleep science (Sao Paulo, Brazil) · 2025Article
- Effectiveness of Live-Streaming Tele-Exercise Intervention in Patients With Parkinson's Disease: A Pilot Study.Journal of movement disorders · 2024Article
- Assessment of Psychometric Characteristics of Parkinson's Disease Sleep Scale 2 and Analysis of a Cut-Off Score for Detecting Insomnia in Italian Patients with Parkinson's Disease: A Validation Study.Journal of personalized medicine · 2024Article
- Evaluation of Nocturnal Symptoms in Chinese Parkinson's Disease Patients Based on the PDSS-2 Scale: A Multicenter Cross-Sectional Study.Journal of Parkinson's disease · 2023Article
- Cardiac sympathetic burden reflects Parkinson disease burden, regardless of high or low orthostatic blood pressure changes.NPJ Parkinson's disease · 2021Article
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Authors and funding
36 authors at 20 institutions in 1 country.
Funding
Abstract
background and purposeThis study aimed to determine the clinimetric properties of the Korean version of Parkinson's Disease Sleep Scale-2 (K-PDSS-2) and whether distinct subtypes of sleep disturbance can be empirically identified in patients with Parkinson's disease (PD) using the cross-culturally validated K-PDSS-2.
methodsThe internal consistency, test-retest reliability, scale precision, and convergent validity of K-PDSS-2 were assessed in a nationwide, multicenter study of 122 patients with PD. Latent class analysis (LCA) was used to derive subgroups of patients who experienced similar patterns of sleep-related problems and nocturnal disabilities.
resultsThe total K-PDSS-2 score was 11.67±9.87 (mean±standard deviation) at baseline and 12.61±11.17 at the retest. Cronbach's α coefficients of the total K-PDSS-2 scores at baseline and follow-up were 0.851 and 0.880, respectively. The intraclass correlation coefficients over the 2-week study period ranged from 0.672 to 0.848. The total K-PDSS-2 score was strongly correlated with health-related quality of life measures and other corresponding nonmotor scales. LCA revealed three distinct subtypes of sleep disturbance in the study patients: "less-troubled sleepers," "PD-related nocturnal difficulties," and "disturbed sleepers."
conclusionsK-PDSS-2 showed good clinimetric attributes in accordance with previous studies that employed the original version of the PDSS-2, therefore confirming the cross-cultural usefulness of the scale. This study has further documented the first application of an LCA approach for identifying subtypes of sleep disturbance in patients with PD.
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