ArticleWorld journal of urology2021
Psychometric validation of the German version of the EPIC-26 questionnaire for patients with localized and locally advanced prostate cancer.
Article in World journal of urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- Variation across operating sites in urinary and sexual outcomes after radical prostatectomy in localized and locally advanced prostate cancer.World journal of urology · 2022Trial
- Patient-reported outcomes: active surveillance vs radical therapies in low-risk prostate cancer.BJU international · 2026Article
- Decision regret after external beam radiotherapy and high dose-rate brachytherapy boost for prostate cancer.World journal of urology · 2025Article
- Article
- Individualized center-based analysis of urinary and sexual functional outcome after radical prostatectomy based on the prostate cancer outcome study: a post hoc pathway to patient outcome measurement analysis for quality improvement.World journal of urology · 2024Article
- [Urinary incontinence after radical prostatectomy for prostate cancer-data from 17,149 patients from 125 certified centers].Urologie (Heidelberg, Germany) · 2024Article
- Psychometric validation of the Spanish version of the Expanded Prostate Cancer Index Composite-26.World journal of urology · 2023Article
- [The interoperability of IIEF-5 with EPIC-26 : Sexual function after radical prostatectomy].Urologie (Heidelberg, Germany) · 2023Article
- Article
- Observational
- Article
- Creation and validation of the harmonized Arabic version of the Expanded Prostate Cancer Index Composite for Clinical Practice (EPIC-CP).Arab journal of urology · 2022Article
- Review
- Clinicians' knowledge and attitudes towards patient reported outcomes in colorectal cancer care - insights from qualitative interviews.BMC health services research · 2021Observational
- From quality management to quality improvement-structures, processes and outcomes.World journal of urology · 2021Article
- Determinants of self-reported functional status (EPIC-26) in prostate cancer patients prior to treatment.World journal of urology · 2021Article
- A multicenter paper-based and web-based system for collecting patient-reported outcome measures in patients undergoing local treatment for prostate cancer: first experiences.Journal of patient-reported outcomes · 2020Article
- Use of psycho-oncological services by prostate cancer patients: A multilevel analysis.Cancer medicine · 2020Observational
Corrections and comments
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Authors and funding
21 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeFor patients with prostate cancer, validated and reliable instruments are essential for measuring patient-reported outcomes. The aim of this study was to validate the German version of the widely established Expanded Prostate Cancer Index Composite with 26 items (EPIC-26).
methodsA German translation of the original questionnaire was tested in 3094 patients with localized or locally advanced (any T, any N and M0) prostate cancer with treatment intent (including radical prostatectomy, brachytherapy, active surveillance, watchful waiting). They completed the EPIC-26 questionnaire before treatment. A total of 521 of them also completed a questionnaire 12 months afterward. Internal consistency, sensitivity to change, and construct validity were assessed.
resultsThe internal consistency of all domains was sufficient (Cronbach's alpha between 0.64 and 0.93). Item-to-scale correlation coefficients showed acceptable associations between items and their domain score (all > 0.30), with the lowest scores for "bloody stools" (r = 0.37) and "breast problems" (r = 0.32). Confirmatory and exploratory factor analysis confirmed the five-dimension structure of the EPIC-26 (comparative fit index 0.95).
conclusionsPsychometric evaluation suggests that the German version of the EPIC-26 is a well-constructed instrument for measuring patient-reported health-related symptoms in patients with prostate cancer.
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