Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease

Seong Beom Koh, Jae Woo Kim, Hyeo Il Ma, Tae Beom Ahn, Jin Whan Cho, philhyu Lee, Sun Ju Chung, Joong Seok Kim, Do Young Kwon, Jong Sam Baik

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Abstract

Background and Purpose Non-motor symptoms are common in Parkinson's disease (PD), and are the primary cause of disability in many PD patients. Our aim in this study was to translate the origin non-motor symptoms scale for PD (NMSS), which was written in English, into Korean (K-NMSS), and to evaluate its reliability and validity for use with Korean-speaking patients with PD. Methods In total, 102 patients with PD from 9 movement disorders sections of university teaching hospitals in Korea were enrolled in this study. They were assessed using the K-NMSS, the Unified Parkinson's Disease Rating Scale (UPDRS), the Korean version of the Mini-Mental Status Examination (K-MMSE), the Korean version of the Montgomery-Asberg Depression Rating Scale (K-MADS), the Epworth Sleepiness Scale (ESS), and Parkinson's Disease Questionnaire 39 (PDQ39). Test-retest reliability was assessed over a time interval of 10-14 days in all but one patient. Results The K-NMSS was administered to 102 patients with PD. The internal consistency and reliability of this tool was 0.742 (mean Cronbach's α-coefficient). The test-retest correlation reliability was 0.941 (Guttman split-half coefficient). There was a moderate correlation between the total K-NMSS score and the scores for UPDRS part I [Spearman's rank correlation coefficient, (rS)=0.521, p<0.001] and UPDRS part II (rS=0.464, p=0.001), but there was only a weak correlation between the total K-NMSS score and the UPDRS part III score (rS=0.288, p=0.003). The total K-NMSS score was significantly correlated with the K-MADS (rS=0.594, p<0.001), K-MMSE (rS=-0.291, p=0.003), and ESS (rS=0.348, p<0.001). The total K-NMSS score was also significantly and positively correlated with the PDQ39 score (rS=0.814, p<0.001). Conclusions The K-NMSS exhibited good reliability and validity for the assessment of non-motor symptoms in Korean PD patients.

Original languageEnglish
Pages (from-to)276-283
Number of pages8
JournalJournal of Clinical Neurology (Korea)
Volume8
Issue number4
DOIs
Publication statusPublished - 2012 Dec 1

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Parkinson Disease
Reproducibility of Results
Movement Disorders
Korea
Nonparametric Statistics
Teaching Hospitals

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

Cite this

Koh, Seong Beom ; Kim, Jae Woo ; Ma, Hyeo Il ; Ahn, Tae Beom ; Cho, Jin Whan ; Lee, philhyu ; Chung, Sun Ju ; Kim, Joong Seok ; Kwon, Do Young ; Baik, Jong Sam. / Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease. In: Journal of Clinical Neurology (Korea). 2012 ; Vol. 8, No. 4. pp. 276-283.
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title = "Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease",
abstract = "Background and Purpose Non-motor symptoms are common in Parkinson's disease (PD), and are the primary cause of disability in many PD patients. Our aim in this study was to translate the origin non-motor symptoms scale for PD (NMSS), which was written in English, into Korean (K-NMSS), and to evaluate its reliability and validity for use with Korean-speaking patients with PD. Methods In total, 102 patients with PD from 9 movement disorders sections of university teaching hospitals in Korea were enrolled in this study. They were assessed using the K-NMSS, the Unified Parkinson's Disease Rating Scale (UPDRS), the Korean version of the Mini-Mental Status Examination (K-MMSE), the Korean version of the Montgomery-Asberg Depression Rating Scale (K-MADS), the Epworth Sleepiness Scale (ESS), and Parkinson's Disease Questionnaire 39 (PDQ39). Test-retest reliability was assessed over a time interval of 10-14 days in all but one patient. Results The K-NMSS was administered to 102 patients with PD. The internal consistency and reliability of this tool was 0.742 (mean Cronbach's α-coefficient). The test-retest correlation reliability was 0.941 (Guttman split-half coefficient). There was a moderate correlation between the total K-NMSS score and the scores for UPDRS part I [Spearman's rank correlation coefficient, (rS)=0.521, p<0.001] and UPDRS part II (rS=0.464, p=0.001), but there was only a weak correlation between the total K-NMSS score and the UPDRS part III score (rS=0.288, p=0.003). The total K-NMSS score was significantly correlated with the K-MADS (rS=0.594, p<0.001), K-MMSE (rS=-0.291, p=0.003), and ESS (rS=0.348, p<0.001). The total K-NMSS score was also significantly and positively correlated with the PDQ39 score (rS=0.814, p<0.001). Conclusions The K-NMSS exhibited good reliability and validity for the assessment of non-motor symptoms in Korean PD patients.",
author = "Koh, {Seong Beom} and Kim, {Jae Woo} and Ma, {Hyeo Il} and Ahn, {Tae Beom} and Cho, {Jin Whan} and philhyu Lee and Chung, {Sun Ju} and Kim, {Joong Seok} and Kwon, {Do Young} and Baik, {Jong Sam}",
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Koh, SB, Kim, JW, Ma, HI, Ahn, TB, Cho, JW, Lee, P, Chung, SJ, Kim, JS, Kwon, DY & Baik, JS 2012, 'Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease', Journal of Clinical Neurology (Korea), vol. 8, no. 4, pp. 276-283. https://doi.org/10.3988/jcn.2012.8.4.276

Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease. / Koh, Seong Beom; Kim, Jae Woo; Ma, Hyeo Il; Ahn, Tae Beom; Cho, Jin Whan; Lee, philhyu; Chung, Sun Ju; Kim, Joong Seok; Kwon, Do Young; Baik, Jong Sam.

In: Journal of Clinical Neurology (Korea), Vol. 8, No. 4, 01.12.2012, p. 276-283.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Validation of the Korean-version of the nonmotor symptoms scale for Parkinson's disease

AU - Koh, Seong Beom

AU - Kim, Jae Woo

AU - Ma, Hyeo Il

AU - Ahn, Tae Beom

AU - Cho, Jin Whan

AU - Lee, philhyu

AU - Chung, Sun Ju

AU - Kim, Joong Seok

AU - Kwon, Do Young

AU - Baik, Jong Sam

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Background and Purpose Non-motor symptoms are common in Parkinson's disease (PD), and are the primary cause of disability in many PD patients. Our aim in this study was to translate the origin non-motor symptoms scale for PD (NMSS), which was written in English, into Korean (K-NMSS), and to evaluate its reliability and validity for use with Korean-speaking patients with PD. Methods In total, 102 patients with PD from 9 movement disorders sections of university teaching hospitals in Korea were enrolled in this study. They were assessed using the K-NMSS, the Unified Parkinson's Disease Rating Scale (UPDRS), the Korean version of the Mini-Mental Status Examination (K-MMSE), the Korean version of the Montgomery-Asberg Depression Rating Scale (K-MADS), the Epworth Sleepiness Scale (ESS), and Parkinson's Disease Questionnaire 39 (PDQ39). Test-retest reliability was assessed over a time interval of 10-14 days in all but one patient. Results The K-NMSS was administered to 102 patients with PD. The internal consistency and reliability of this tool was 0.742 (mean Cronbach's α-coefficient). The test-retest correlation reliability was 0.941 (Guttman split-half coefficient). There was a moderate correlation between the total K-NMSS score and the scores for UPDRS part I [Spearman's rank correlation coefficient, (rS)=0.521, p<0.001] and UPDRS part II (rS=0.464, p=0.001), but there was only a weak correlation between the total K-NMSS score and the UPDRS part III score (rS=0.288, p=0.003). The total K-NMSS score was significantly correlated with the K-MADS (rS=0.594, p<0.001), K-MMSE (rS=-0.291, p=0.003), and ESS (rS=0.348, p<0.001). The total K-NMSS score was also significantly and positively correlated with the PDQ39 score (rS=0.814, p<0.001). Conclusions The K-NMSS exhibited good reliability and validity for the assessment of non-motor symptoms in Korean PD patients.

AB - Background and Purpose Non-motor symptoms are common in Parkinson's disease (PD), and are the primary cause of disability in many PD patients. Our aim in this study was to translate the origin non-motor symptoms scale for PD (NMSS), which was written in English, into Korean (K-NMSS), and to evaluate its reliability and validity for use with Korean-speaking patients with PD. Methods In total, 102 patients with PD from 9 movement disorders sections of university teaching hospitals in Korea were enrolled in this study. They were assessed using the K-NMSS, the Unified Parkinson's Disease Rating Scale (UPDRS), the Korean version of the Mini-Mental Status Examination (K-MMSE), the Korean version of the Montgomery-Asberg Depression Rating Scale (K-MADS), the Epworth Sleepiness Scale (ESS), and Parkinson's Disease Questionnaire 39 (PDQ39). Test-retest reliability was assessed over a time interval of 10-14 days in all but one patient. Results The K-NMSS was administered to 102 patients with PD. The internal consistency and reliability of this tool was 0.742 (mean Cronbach's α-coefficient). The test-retest correlation reliability was 0.941 (Guttman split-half coefficient). There was a moderate correlation between the total K-NMSS score and the scores for UPDRS part I [Spearman's rank correlation coefficient, (rS)=0.521, p<0.001] and UPDRS part II (rS=0.464, p=0.001), but there was only a weak correlation between the total K-NMSS score and the UPDRS part III score (rS=0.288, p=0.003). The total K-NMSS score was significantly correlated with the K-MADS (rS=0.594, p<0.001), K-MMSE (rS=-0.291, p=0.003), and ESS (rS=0.348, p<0.001). The total K-NMSS score was also significantly and positively correlated with the PDQ39 score (rS=0.814, p<0.001). Conclusions The K-NMSS exhibited good reliability and validity for the assessment of non-motor symptoms in Korean PD patients.

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