2013
DOI: 10.1590/s1415-790x2013000200011
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Validity, reliability and understanding of the EORTC-C30 and EORTC-BR23, quality of life questionnaires specific for breast cancer

Abstract: Objective: To validate and assess reliability and understanding of the EORTC-C30 quality of life questionnaire and its breast cancer specific module, the EORTC-BR23. Methods: This study was conducted at the AC Camargo Cancer Hospital, São Paulo, Brazil. A total of 100 women diagnosed with breast cancer were interviewed. Internal consistency, confirmatory factorial analysis, convergent validity, construct validity and degree of understanding were examined. Reliability was assessed by comparison of means at time… Show more

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Cited by 93 publications
(104 citation statements)
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References 23 publications
(23 reference statements)
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“…The QLQ-C30 and QLQ-BR23 questionnaires used were the translated and validated versions for Brazil. (5) The analysis of sociodemographic and clinical data was by absolute and relative frequency. Data from the QLQ-C30 and QLQ-BR23 questionnaires had a 0-100 score according to the Scoring Manual of European Organization for Research and Treatment of Cancer.…”
Section: Methodsmentioning
confidence: 99%
“…The QLQ-C30 and QLQ-BR23 questionnaires used were the translated and validated versions for Brazil. (5) The analysis of sociodemographic and clinical data was by absolute and relative frequency. Data from the QLQ-C30 and QLQ-BR23 questionnaires had a 0-100 score according to the Scoring Manual of European Organization for Research and Treatment of Cancer.…”
Section: Methodsmentioning
confidence: 99%
“…The second instrument is a specific module for breast cancer, which was translated and validated in 2007, published in 2013, 14 and composed of 23 questions divided into three groups. The first group investigated secondary symptoms to systemic therapy, so they were not evaluated.…”
Section: Methodsmentioning
confidence: 99%
“…For this reason, these characteristics turned this questionnaire the most indicated to measure quality of life in patients with cancer. (11,13) The QLQ-C30 questionnaire had units defined as items groups that are not approached or not explored enough in the main questionnaire, although it is relevant for a quality-of-life assessment of specific groups. (11) The QLQ-BR23 unit was created specifically for women with breast cancer.…”
Section: Methodsmentioning
confidence: 99%
“…Quality-of-life assessment for such patients must consider aspects involving disease improvement, stabilization, or worsening based on treatment that includes physical, psychological, and social well-being. (10)(11)(12)(13) This study hypothesis is that the effect generated by diagnosis and implications of treatments could affect functional capability and impair occupational performance because of difficulty in performing daily life activities, therefore causing important changes in quality of life. The objective of this study was to evaluate quality of life and functional capability of women with breast cancer one year after treatment with chemotherapy and/or radiotherapy, and to verify correlations among variables.…”
Section: Introductionmentioning
confidence: 99%