Digital Instruments for Reporting of Gastrointestinal Symptoms in Clinical Trials: Comparison of End-of-Day Diaries Versus the Experience Sampling Method

Abraham B Beckers   ¹ , MD ;   Johanna T W Snijkers   ¹ , MD ;   Zsa Zsa R M Weerts   ¹ , MD, PhD ;   Lisa Vork   ¹ , MD, PhD ;   Tim Klaassen   ¹ , MD, PhD ;   Fabienne G M Smeets   ¹ , MD, PhD ;   Ad A M Masclee   ¹ , MD, Prof Dr ;   Daniel Keszthelyi   ¹ , MD, PhD

¹ Division of Gastroenterology-Hepatology, Department of Internal Medicine, Maastricht University Medical Center, Maastricht, Netherlands, The