US hospitals report data on numerous quality metrics to government and independent rating organizations, but the cost of doing so is not well known. JAMA Associate Editor Karen E. Joynt Maddox, MD, discusses a new study that examines just how many quality metrics hospitals have to report, and attempts to quantify how much data collection and reporting costs in hours and dollars, with corresponding author Stephen A. Berry MD, PhD, Johns Hopkins University, Baltimore, Maryland. Related Content: The Volume and Cost of Quality Metric Reporting