The case-crossover design for studying sudden events

• Irene Petersen,
• Malcolm Maclure,
• Dan Lewer

Affiliations

Irene Petersen

Department of Clinical Epidemiology, Aarhus University, Aarhus, Denmark

Malcolm Maclure

Department of Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, British Columbia, Canada

Dan Lewer

consultant in public health