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Quality of Life Research
Gepubliceerd in:

01-09-2012 | Brief Communication

Reliability and validity of PDQ-39: a quality-of-life measure for patients with PD in China

Auteurs: Jing-Lin Zhang, Piu Chan

Gepubliceerd in: Quality of Life Research | Uitgave 7/2012

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Abstract

The syndromes of Parkinson’s disease (PD) have impacts on health-related quality of life (HRQL). The 39-item Parkinson’s disease Questionnaire (PDQ-39) was the first specific and a consistent instrument for the evaluation of HRQL in PD patients.

Purpose

To test the reliability and validity of Chinese version PDQ-39.

Methods

Hundred and twenty-six PD without cognitive impairment were enrolled. The Chinese version of SF-36 was used to evaluate the congruent validity of PDQ-39 between related domains. Both PDQ-39 and SF-36 scales were fulfilled by the patients themselves.

Results

Five of eight subscales of PDQ-39 met the acceptable standards of reliability (Cronbach’s α coefficient >0.80), while the other three subscales (cognition, communication, and bodily discomfort) failed to reach the above standards as reported by the others. All the item-to-subscale correlations (range: 0.457–0.887) met the minimal acceptable item convergent validity criterion of 0.40 (P < 0.001). Correlation between PDQ-39 subscales and scales of the SF-36 had high negative correlations with a range of −0.759 to −0.124. Four of them had significant negative correlations (P < 0.0001).

Conclusions

The Chinese version of PDQ-39 is a reliable and valid instrument for Chinese PD patients. It is recommended as the most appropriate HRQL tool for PD.
vorige artikel Validity, reliability and responsiveness of the EQ-5D in German stroke patients undergoing rehabilitation
volgende artikel PROMIS® Parent Proxy Report Scales: an item response theory analysis of the parent proxy report item banks
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Metagegevens
Titel
Reliability and validity of PDQ-39: a quality-of-life measure for patients with PD in China
Auteurs
Jing-Lin Zhang
Piu Chan
Publicatiedatum
01-09-2012
Uitgeverij
Springer Netherlands
Gepubliceerd in
Quality of Life Research / Uitgave 7/2012
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-011-0026-1

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