Abstract
Quality-of-life (QOL) is paramount in clinical decision-making in the management of prostate cancer patients. The expanded prostate index composite (EPIC) is a widely used and well-validated QOL tool that allows for the evaluation of bowel, urinary, sexual, and hormonal domains. A Filipino translation was previously lacking. We describe the development and pilot testing of the Filipino translation of the EPIC (EPIC-F). The EPIC-32 was translated into Filipino using iterative forward and backward procedures with checks for semantic congruency. The translation was then evaluated by an expert panel consisting of a prostate cancer survivor and pertinent health professionals. A focused group discussion (FGD) was conducted to explore sources of difficulty of use to guide improvement. The linguistically validated translation was evaluated to have cultural relevancy, adequacy, and representativeness by the expert panel, and to have good understandability and answerability by a representative pilot cohort of prostate cancer patients. Seven unsatisfactory items were identified, all pertaining to the sexual domain, and required minimal revision on review during the FGD. The EPIC-F is a linguistically and culturally validated version of the EPIC 32, with good understandability and answerability, permitting clinical use. Its psychometric properties need to be determined to define its utility in clinical research.
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