Collecting accurate and representative data from patients is vital, whether it’s in the context of clinical data collection that will determine a treatment plan, or a global clinical trial whose data quality could determine the results of a drug development application. To collect high-quality patient-reported data, patients must understand both the questions they are being asked and how to use the study’s device in order to answer those questions. Elizabeth Yohe Moore et al, RWS Life Sciences, explore how to improve data collection and patient experience.