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1. 3. 2018.
Development, content validity, and cross‐cultural adaptation of a patient‐reported outcome measure for real‐time symptom assessment in irritable bowel syndrome
End‐of‐day questionnaires, which are considered the gold standard for assessing abdominal pain and other gastrointestinal (GI) symptoms in irritable bowel syndrome (IBS), are influenced by recall and ecological bias. The experience sampling method (ESM) is characterized by random and repeated assessments in the natural state and environment of a subject, and herewith overcomes these limitations. This report describes the development of a patient‐reported outcome measure (PROM) based on the ESM principle, taking into account content validity and cross‐cultural adaptation.