Validation of the Korean Version of the Scales for Outcomes in Parkinson's Disease-Sleep

Dec 8, 2017Journal of Korean medical science

Testing the Korean version of Parkinson's disease sleep symptom scales

AI simplified

Circadian Biology on OpenScience ↗PubMed ↗DOI ↗OA ↗

Abstract

The internal consistency of the Korean version of the Scales for Outcomes in Parkinson's Disease-Sleep (K-SCOPA-S) was 0.88 for nighttime sleep.

K-SCOPA-S demonstrated good test-retest reliability with values of 0.88 for nighttime sleep and 0.85 for daytime sleepiness.
A moderate correlation was observed between the nighttime sleep sub-score and the total score of the Parkinson's Disease Sleep Scale (PDSS-2).
Sub-scores of K-SCOPA-S for nighttime sleep and daytime sleepiness were correlated with various motor and non-motor scales, including the Hoehn and Yahr Scale and the Montgomery Asberg Depression Scale.

AI simplified

BACKGROUND: Sleep problems commonly occur in patients with Parkinson's disease (PD), and are associated with a lower quality of life. The aim of the current study was to translate the English version of the Scales for Outcomes in Parkinson's Disease-Sleep (SCOPA-S) into the Korean version of SCOPA-S (K-SCOPA-S), and to evaluate its reliability and validity for use by Korean-speaking patients with PD.

METHODS: In total, 136 patients with PD from 27 movement disorder centres of university-affiliated hospitals in Korea were enrolled in this study. They were assessed using SCOPA, Hoehn and Yahr Scale (HYS), Unified Parkinson's Disease Rating Scale (UPDRS), Parkinson's Disease Sleep Scale 2nd version (PDSS-2), Non-motor Symptoms Scale (NMSS), Montgomery Asberg Depression Scale (MADS), 39-item Parkinson's Disease Questionnaire (PDQ39), Neurogenic Orthostatic Hypotension Questionnaire (NOHQ), and Rapid Eye Movement Sleep Behaviour Disorder Questionnaire (RBDQ). The test-retest reliability was assessed over a time interval of 10-14 days.

RESULTS: The internal consistency (Cronbach's α-coefficients) of K-SCOPA-S was 0.88 for nighttime sleep (NS) and 0.75 for daytime sleepiness (DS). Test-retest reliability was 0.88 and 0.85 for the NS and DS, respectively. There was a moderate correlation between the NS sub-score and PDSS-2 total score. The NS and DS sub-scores of K-SCOPA-S were correlated with motor scale such as HYS, and non-motor scales such as UPDRS I, UPDRS II, MADS, NMSS, PDQ39, and NOHQ while the DS sub-score was with RBDQ.

CONCLUSION: The K-SCOPA-S exhibited good reliability and validity for the assessment of sleep problems in the Korean patients with PD.

Key numbers

0.88

Internal Consistency (Nighttime Sleep)

Cronbach's α-coefficient for nighttime sleep subscale

0.85

Test-Retest Reliability (Daytime Sleepiness)

Intraclass correlation coefficient for daytime sleepiness subscale

136

Patient Cohort Size

Total number of patients enrolled in the study

Full Text

We can’t show the full text here under this license. Use the link below to read it at the source.

View full text (PDF) ↗View full text ↗

Validation of the Korean Version of the Scales for Outcomes in Parkinson's Disease-Sleep

Abstract

Key numbers

Full Text

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief

Abstract

Key numbers

Full Text

Related papers

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the circadian biology brief