Using Patient Experience Data to Evaluate Medical Interventions, Second Edition is a practical guide to generating, understanding and applying patient experience data (PED) across clinical development. Updated in 2026, the book explores patient-focused drug development (PFDD), qualitative research, clinical outcome assessments (COAs), digital health technologies (DHTs), patient preference research, clinical trial endpoints and multinational studies. It also considers the evolving role of artificial intelligence (AI) in patient experience research and provides practical insights into using patient-centered evidence to inform regulatory, health technology assessment (HTA), payer, healthcare professional and patient decision-making.