CODE-MI is a multi-centre stepped wedge, cluster randomized trial with an overall objective of evaluating the impact of using the female-specific 99th percentile cut-point for high-sensitivity cardiac troponin (hs-cTn), compared to the overall 99th percentile cut-point, on the diagnosis, treatment and outcomes of women presenting to the emergency department with cardiac chest pain.

Study Videos:

CODE-MI Overview: Dr. Karin Humphries

CODE-MI, ED Perspective: Dr. Jim Christenson

Study Objectives

To examine the impact of using a lower female-specific hs-cTn cut-point on:

  • Diagnostic and therapeutic strategies
  • Prognosis: all-cause mortality, readmission for non-fatal myocardial infarction, incident heart failure or emergent/urgent coronary revascularization at one year following presentation to ED department
  • Costs of diagnostic testing and treatment

Study Design and Timeline

  • Stepped wedge, cluster randomized trial, with clusters (hospitals) crossing over sequentially, in random order, from control to intervention phase
  • Control Phase: Standard of care, with the use of single, overall hs-cTn cut-point in both sexes
  • Intervention Phase: Introduction of female hs-cTn cut-point
  • Initiation of randomization date: January 2020
  • Approximate study end date: March 2025

Study Organization


26 Participating Sites across Canada

Participating Sites and Leads

British Columbia – Provincial Lead: Dr. Frank Scheuermeyer

Saskatchewan – Provincial Lead: Dr. Andrew Lyon

Manitoba – (Control Site)

Ontario – Provincial Lead: Dr. Jay Udell

Quebec – Provincial Lead: Dr. Louise Pilote

New Brunswick – Provincial Lead: Dr. Ansar Hassan 

Nova Scotia – Provincial Lead: Dr. Jafna Cox