Patient Reported Experience Measure in Endoscopic Ultrasonography: The PREUS Study Protocol.

The evaluation of the patient's experience is becoming increasingly important as a better patient experience can improve the quality of the health service delivered. Patient-reported experience measures (PREMs) are self-report assessment tools provided to patients about their experience during any health event. There are few PREM instruments in the field of gastrointestinal endoscopy, and none is specific for endoscopic ultrasound (EUS). This study aims to develop a questionnaire to evaluate the experience of patients undergoing EUS, identifying and prioritizing the factors related to the patient's experience. The study will consist of several phases: (A) tool creation; (B) face and content validity; (C) ranking: to evaluate the relevance of the identified questions in the previous phase; (D) questionnaire creation and validity testing. The final output will be the production of a specific tool that can be used to measure patients' experience during EUS. This questionnaire may become a relevant part of actions taken to measure the quality of care provided to patients undergoing EUS. Furthermore, correlation between health care providers' and patients' views of the relevance of the included items will allow optimization of empathetic and psychological aspects.