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Subtypes of Sleep Disturbance in Parkinson's Disease Based on the Cross-Culturally Validated Korean Version of Parkinson's Disease Sleep Scale-2
- Subtypes of Sleep Disturbance in Parkinson's Disease Based on the Cross-Culturally Validated Korean Version of Parkinson's Disease Sleep Scale-2
- Yang, Hui-Jun; Kim, Han-Joon; Koh, Seong-Beom; Kim, Joong-Seok; Ahn, Tae-Beom; Cheon, Sang-Myung; Cho, Jin Whan; Kim, Yoon-Joong; Ma, Hyeo-Il; Park, Mee Young; Baik, Jong Sam; Lee, Phil Hyu; Chung, Sun Ju; Kim, Jong-Min; Song, In-Uk; Kim, Ji-Young; Sung, Young-Hee; Kwon, Do Young; Lee, Jae-Hyeok; Lee, Jee-Young; Kim, Ji Seon; Yun, Ji Young; Kim, Hee Jin; Hong, Jin Yong; Kim, Mi-Jung; Youn, Jinyoung; Kim, Ji Sun; Oh, Eung Seok; Yoon, Won Tae; You, Sooyeoun; Kwon, Kyum-Yil; Park, Hyung-Eun; Lee, Su-Yun; Kim, Younsoo; Kim, Hee-Tae; Kim, Sang Jin
- Ewha Authors
- Issue Date
- Journal Title
- JOURNAL OF CLINICAL NEUROLOGY
- JOURNAL OF CLINICAL NEUROLOGY vol. 16, no. 1, pp. 66 - 74
- Parkinson disease; sleep; Parkinson's Disease Sleep Scale-2; Korean version; validity; latent class analysis
- KOREAN NEUROLOGICAL ASSOC
- SCIE; SCOPUS; KCI
- Document Type
- Background and Purpose This 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. Methods The 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. Results The 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 a 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". Conclusions K-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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