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A large scale prospective clinical and psychometric validation of the EORTC colorectal (QLQ-CR29) module in Polish patients with colorectal cancer

B. Sanna, K. Bereza, D. Paradowska, E. Kucharska, IM. Tomaszewska, Z. Dudkiewicz, J. Golec, A. Bottomley, KA. Tomaszewski,

. 2017 ; 26 (6) : . [pub] 20170511

Language English Country England, Great Britain

Document type Journal Article, Validation Study

Persistent link   https://www.medvik.cz/link/bmc18033905

The purpose of our study was to assess if the Polish translation of the European Organisation for Research and Treatment of Cancer (EORTC) Colorectal Cancer (CRC)-Specific Quality of Life Questionnaire (QLQ-CR29) is an acceptable and psychometrically valid measure to collect quality of life (QoL) data in Polish patients with CRC for use in clinical trials and clinical practice. A total of 150 patients undergoing treatment for CRC were prospectively enrolled in the study. Psychometric assessment of the translated QLQ-CR29 structure, reliability, convergent and divergent validity, and clinical validity was subsequently performed. The Cronbach's alpha coefficient ranged from 0.70-0.89, indicating acceptable internal consistency. For test-retest reliability, the ICCs for each item ranged from 0.59-0.91, with exceptions for urinary incontinence and dysuria, indicating good to excellent reproducibility. In multi-trait scaling analyses, the criterion for item convergent and divergent validity was satisfied. The correlations between the EORTC QLQ-CR29 and QLQ-C30 scales were mostly low (r < .40), with a few items demonstrating higher correlations. The known group comparisons analyses demonstrated the ability of the questionnaire to distinguish between patients' differing age, stoma status, and treatment intent. The Polish translation of the QLQ-CR29 is a psychometrically reliable and valid tool. The results of this study are congruent with that of EORTC validation.

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$a The purpose of our study was to assess if the Polish translation of the European Organisation for Research and Treatment of Cancer (EORTC) Colorectal Cancer (CRC)-Specific Quality of Life Questionnaire (QLQ-CR29) is an acceptable and psychometrically valid measure to collect quality of life (QoL) data in Polish patients with CRC for use in clinical trials and clinical practice. A total of 150 patients undergoing treatment for CRC were prospectively enrolled in the study. Psychometric assessment of the translated QLQ-CR29 structure, reliability, convergent and divergent validity, and clinical validity was subsequently performed. The Cronbach's alpha coefficient ranged from 0.70-0.89, indicating acceptable internal consistency. For test-retest reliability, the ICCs for each item ranged from 0.59-0.91, with exceptions for urinary incontinence and dysuria, indicating good to excellent reproducibility. In multi-trait scaling analyses, the criterion for item convergent and divergent validity was satisfied. The correlations between the EORTC QLQ-CR29 and QLQ-C30 scales were mostly low (r < .40), with a few items demonstrating higher correlations. The known group comparisons analyses demonstrated the ability of the questionnaire to distinguish between patients' differing age, stoma status, and treatment intent. The Polish translation of the QLQ-CR29 is a psychometrically reliable and valid tool. The results of this study are congruent with that of EORTC validation.
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$a Bereza, K $u Department of Gynaecological Care, Jagiellonian University Medical College, Krakow, Poland.
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$a Paradowska, D $u Department of Clinical Oncology, John Paul II Specialist Hospital, Krakow, Poland.
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$a Kucharska, E $u Department of Gerontology, Geriatrics and Social Work, Ignatianum Academy, Krakow, Poland.
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$a Tomaszewska, I M $u Department of Medical Education, Jagiellonian University Medical College, Krakow, Poland.
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$a Dudkiewicz, Z $u Faculty of Physiotherapy, Lodz Medical University, Lodz, Poland.
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$a Golec, J $u Department of Clinical Rehabilitation, Bronislaw Czech University of Physical Education, Krakow, Poland.
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$a Bottomley, A $u Quality of Life Department, European Organisation for Research and Treatment of Cancer Headquarters, Brussels, Belgium.
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$a Tomaszewski, K A $u Health Outcomes Research Unit, Department of Gerontology, Geriatrics and Social Work, Faculty of Education, Ignatianum Academy, Krakow, Poland.
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