Translation and Validation of the Korean Version of the 39-Item Parkinson's Disease Questionnaire
- Authors
- Kwon, Do-Young; Kim, Jae Woo; Ma, Hyeo-Il; Ahn, Tae-Beom; Cho, Jinwhan; Lee, Phil Hyu; Chung, Sun Ju; Kim, Joong-Seok; Baik, Jong Sam; Koh, Seong-Beom
- Issue Date
- 1월-2013
- Publisher
- KOREAN NEUROLOGICAL ASSOC
- Keywords
- Parkinson' s disease; quality of life; validation
- Citation
- JOURNAL OF CLINICAL NEUROLOGY, v.9, no.1, pp.26 - 31
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF CLINICAL NEUROLOGY
- Volume
- 9
- Number
- 1
- Start Page
- 26
- End Page
- 31
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104309
- DOI
- 10.3988/jcn.2013.9.1.26
- ISSN
- 1738-6586
- Abstract
- Background and Purpose The importance of health-related quality of life (HrQoL) has been increasingly emphasized when assessing and providing treatment to patients with chronic, progressive, degenerative disorders. The 39-item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient-reporting scale to assess HrQoL in Parkinson's disease (PD). This study evaluated the validity and reliability of the translated Korean version of the PDQ-39 (K-PDQ-39). Methods One hundred and two participants with PD from 10 movement disorder clinics at university-affiliated hospitals in South Korea completed the K-PDQ-39. All of the participants were also tested using the Unified Parkinson's Disease Rating Scale (UPDRS), Korean version of the Mini-Mental State Examination (K-MMSE), Korean version of the Montgomery-Asberg Depression Scale (K-MADS), Epworth Sleepiness Scale (ESS) and non-motor symptoms scale (NMSS). Retests of the K-PDQ-39 were performed over time intervals from 10 to 14 days in order to assess test-retest reliability. Results Each K-PDQ-39 domain showed correlations with the summary index scores (rS=0.559-0.793, p<0.001). Six out of eight domains met the acceptable standard of reliability (Cronbach's alpha coefficient >= 0.70). The Guttman split-half coefficient value of the K-PDQ-39 summary index, which is an indicator of test-retest reliability, was 0.919 (p<0.001). All of the clinical variables examined except for age, comprising disease duration, levodopa equivalent dose, modified Hoehn and Yahr stage (H&Y stage), UPDRS part I, II and III, mood status (K-MADS), cognition (K-MMSE), daytime sleepiness (ESS) and (NMSS) showed strong correlations with the K-PDQ-39 summary index (p<0.01). Conclusions The K-PDQ-39 has been validated for use in the Korean-speaking PD population. The questionnaire is a valid and reliable assessment tool for assessing the HrQoL of Korean PD patients. J Clin Neurol 2013;9:26-31
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