Portuguese version of the Expanded Prostate Cancer Index Composite for Clinical Practice (EPIC-CP): psychometric validat
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Portuguese version of the Expanded Prostate Cancer Index Composite for Clinical Practice (EPIC‑CP): psychometric validation and prospective application for early functional outcomes at a single institution Danilo B. Lourenço1, Breno Santos Amaral1, Wladimir Alfer‑Junior1, Ana Vasconcellos1, Fernanda Russo1, Rafael Sanchez‑Salas2, Bianca Bianco1* , Andrew A. Wagner3, Peter Chang3, Marcio Covas Moschovas1, Gustavo Caserta Lemos1 and Arie Carneiro1
Abstract Background: The Expanded Prostate Index Composite for Clinical Practice (EPIC-CP) is a short version of the original EPIC, developed to facilitate the instrument’s use in routine care. This study aimed to validate the EPIC-CP Portuguese version, and evaluate its role in presenting early functional outcomes of surgically treated prostate cancer patients at a Latin American referral center. Methods: The EPIC-CP was self-administered prospectively and individually by all localized prostate cancer patients, before and after robotic-assisted radical prostatectomy, from March 2017 to June 2018 at a single institution. For validation, we used the Cronbach’s alpha coefficient to evaluate internal consistency. The EPIC-CP domains were compared before surgery, and 6 months and 12 months after surgery. Statistical analyses were performed using the student’s t test, and Wilcoxon and Friedman tests, with p values
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