Digital Instruments for Reporting of Gastrointestinal Symptoms in Clinical Trials: Comparison of End-of-Day Diaries Versus the Experience Sampling Method.
Abraham B BeckersJohanna T W SnijkersZsa Zsa R M WeertsLisa VorkTim KlaassenFabiënne G M SmeetsAdrian A M MascleeDaniel KeszthelyiPublished in: JMIR formative research (2021)
This study demonstrates excellent adherence rates for smartphone app-based end-of-day diaries as used in 2 separate clinical trials. Overall adherence rates for ESM were significantly lower, rendering it more suitable for intermittent sampling periods rather than continuous sampling during longer clinical trials.