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Sleep disturbance subtypes in Parkinson’s disease based on the cross-culturally validated Korean version of the Parkinson’s Disease Sleep Scale-2

Article scientifique 2019 Anglais

Résumé

Abstract Background: Sleep-related problems in Parkinson’s disease (PD) have received greater attention in recent years due to their clinical influence on morbidity, disability, and the health-related quality of life (HRQoL) of patients. This study aimed to evaluate the clinimetric properties of the Korean version of the Parkinson’s Disease Sleep Scale-2 (K-PDSS-2), and to analyze whether distinct sleep disturbance subtypes could be empirically identified in patients with PD based on the cross-culturally validated K-PDSS-2. Methods: The internal consistency, test-retest reliability, scale precision, and convergent validity of the 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 mean total K-PDSS-2 scores were 11.67 ± 9.87 (mean ± standard deviation) at baseline, and 12.61 ± 11.17 upon follow up testing. The Cronbach’s α coefficients of the total K-PDSS-2 score at baseline and at follow up testing were 0.851 and 0.880 respectively. Intraclass correlation coefficient over the 2-week period ranged from 0.672 to 0.848. The total K-PDSS-2 score was strongly correlated to HRQoL measures and other corresponding nonmotor scales. LCA indicated three distinct sleep disturbance classes in the study patients, namely “less troubled sleepers”, “PD-related nocturnal difficulties”, and “disturbed sleepers”. Conclusions: The K-PDSS-2 showed good clinimetric attributes in accordance with prior studies that were using the original version of the PDSS-2, therefore confirming the cross-cultural usefulness of the scale. Further, this study documents the first application of an LCA approach for identifying sleep disturbance subtypes in patients with PD. Keywords: Parkinson’s disease; sleep; PDSS-2; validity; reliability; Korean version; latent class analysis.

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Yang, H., Kim, H., Koh, S., Kim, J., Ahn, T., Cheon, S., Cho, J., Kim, Y., Ma, H., Park, M., Baik, J., Lee, P., Chung, S., Kim, J., Song, I., Kim, J., Sung, Y., Kwon, D., Lee, J., Lee, J., Kim, J., Yun, J., Hong, J., Kim, M., Youn, J., Kim, J., Oh, E., Yoon, W., You, S., Kwon, K., Park, H., Lee, S., Kim, Y., Kim, H., Kim, S. (2019). Sleep disturbance subtypes in Parkinson’s disease based on the cross-culturally validated Korean version of the Parkinson’s Disease Sleep Scale-2. https://doi.org/10.21203/rs.2.299/v1

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Auteur(s)

Hui-Jun Yang Han‐Joon Kim Seong‐Beom Koh Joong‐Seok Kim Tae‐Beom Ahn Sang‐Myung Cheon Jin Whan Cho Yoon-Joong Kim Hyeo‐Il Ma Mee-Young Park Jong Sam Baik Phil Hyu Lee Sun Ju Chung Jong Min Kim In‐Uk Song Jiyoung Kim Young Hee Sung Do‐Young Kwon Jae‐Hyeok Lee Jee‐Young Lee Ji Sun Kim Ji Young Yun Jin Young Hong Mi‐Jung Kim Jinyoung Youn Ji Seon Kim Eungseok Oh Won Tae Yoon Sooyeoun You Kyum‐Yil Kwon Hyung-Eun Park Su-Yun Lee Younsoo Kim Hee-Tae Kim Sang Jin Kim

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