Figure 1. Flow of Hospitals and Participants Through the ACS QUIK Trial.

All hospitals approached agreed to participate and were included. Randomization occurred at a single time point prior to patient enrollment. Hospitals were blinded to their assigned cohort until 2 weeks prior to the time point at which their cohort moved from the control stage to intervention stage. Participants lost to follow-up include those who could not be reached after 3 contact attempts and those for whom the site did not perform the follow-up procedure. Patients lost to follow-up were included in the analysis.