The fourth episode focuses on data quality in clinical research, and how it relates to medication adherence. It features Antoine Pironet - a data scientist with a background in biomedical engineering, experienced in analyzing data collected in national registries and data in electronic medical adherence systems. Let's listen to some of his experience with the analysis of medical adherence data. Let's learn about patients' behavior and how they may influence the final results in clinical trials in terms of computed efficacy. Let's get inspired by measuring medication adherence instead of harassing patients.