Dr. Barrett studied medicine at the Schulich School of Medicine & Dentistry at the University of Western Ontario. She subsequently pursued residency training in internal medicine and adult critical care medicine at the University of Toronto. She has a Master’s of Science in Health Policy, Planning & Financing from the London School of Hygiene & Tropical Medicine and the London School of Economics, and received the Brian Abel Smith Award for both her dissertation and course work. Her research is focused on the cost-effectiveness of critical care programs and delivery, as well as evidence-based policy development. She serves on the Ontario Health Technology Advisory Committee at Health Quality Ontario, which reviews the economic and clinical evidence for health technologies and makes recommendations regarding whether they should be publicly funded in Ontario.