METHODS
Following approvals from the appropriate Institutional Review Boards, the STEMI coordinators at the six hospitals compiled de-identified shelved data that had been collected for potential STEMI patients admitted between January 1, 2016 and August 31, 2018. The data were given to investigators for analysis; random numbers were assigned to the six hospitals. The tool used by the STEMI coordinators included variables as shown in Table 1. Using data provided on the collection forms, the investigators determined which of the following scenarios was present for each patient based on the possible methods patients received management for STEMI: