1. Centre for Surveillance and Applied Research, Public Health Agency of Canada, Ottawa, Ontario, Canada
2. School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
3. School of Mathematics and Statistics, Faculty of Sciences, Carleton University, Ottawa, Ontario, Canada
4. Health Analysis Division, Statistics Canada, Ottawa, Ontario, Canada
5. Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
6. Schlegel-University of Waterloo Research Institute for Aging, University of Waterloo, Waterloo, Ontario
7. KITE at Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario