John P. Hirdes is Professor of Applied Health Sciences at the School of Public Health and Health Systems at the University of Waterloo. His primary areas of interest include geriatric assessment, mental health, health care and service delivery, case mix systems, quality measurement, health information management, and quantitative research methods. Working as the senior Canadian Fellow and as a Board Member of interRAI, an international consortium of researchers from over 35 countries, Dr. Hirdes also chairs interRAI’s International Network of Excellence in Mental Health and the interRAI Network of Canada.