This lecture will provide an overview of the role of time in how health economics and health services research does—or might—define, measure, and study health and health care. A conceptual overview will be followed by a discussion of examples where resolution
of clinical and public policy questions depends on consideration of such issues, including: health-system contact time, episodic illness and care use, hospital readmissions, population health measurement, and others. How Will Manning's work addressed a number
of these topics will be considered throughout.