Psychometric evaluation of the Taiwan Chinese version of the EORTC QLQ-PR25 for HRQOL assessment in prostate cancer patients
To evaluate the psychometric properties of the Taiwan Chinese Version of the EORTC QLQ-PR25 health-related quality of life (HRQOL) questionnaire for patients with prostate cancer.
135 prostate cancer patients were recruited in the urology outpatient clinic of a university teaching hospital. Each patient completed the EORTC QLQ-PR25 at every clinic visit between 2004 and 2008, totaling 633 assessments. Confirmatory factor analysis and Rasch analysis were used to evaluate the domain- and item-level psychometric properties.
The results supported the unidimensionality of each of the four EORTC QLQ-PR25 domains (urinary, bowel, and hormonal-treatment-related symptoms, and sexual functioning). Item calibrations for each domain were found invariant across the three assessment time periods. The item-person maps showed 71.3% of item coverage for the urinary symptoms domain and 13–42.7% for the other three domains.
The Taiwan Chinese Version of the EORTC QLQ-PR25 questionnaire is reliable and can be used to measure HRQOL over time. Adding new items to each domain may improve its clinical content coverage and measurement precision.
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- Psychometric evaluation of the Taiwan Chinese version of the EORTC QLQ-PR25 for HRQOL assessment in prostate cancer patients
- Open Access
- Available under Open Access This content is freely available online to anyone, anywhere at any time.
Health and Quality of Life Outcomes
- Online Date
- August 2012
- Online ISSN
- BioMed Central
- Additional Links
- EORTC QLQ-PR25
- Health-related quality of life
- Prostate cancer
- Rasch analysis
- Item response theory
- Author Affiliations
- 1. Graduate Institute of Public Health, China Medical University, Taichung, Taiwan
- 2. Epidemiology and Biostatistics Center, Changhua Christian Hospital, Changhua, Taiwan
- 3. Graduate Institute of Biostatistics, China Medical University, Taichung, Taiwan
- 4. Biostatistics Center, China Medical University, Taichung, Taiwan
- 5. Department of Urology, China Medical University Hospital, Taichung, Taiwan
- 6. School of Medicine, China Medical University, Taichung, Taiwan
- 7. Department of Health Risk Management, China Medical University, Taichung, Taiwan
- 8. Department of Health Services Administration, China Medical University, Taichung, Taiwan
- 10. Division of General Internal Medicine and Geriatrics, Department of Medicine, Buehler Center on Aging, Health & Society, Northwestern University Feinberg School of Medicine, 750 N. Lake Shore Drive, Suite 601, Chicago, IL, 60611, USA
- 9. Buehler Center on Aging, Health & Society, Northwestern University Feinberg School of Medicine, 750 N. Lake Shore Drive, Suite 601, Chicago, IL, 60611, USA