Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The percent of Perfusion Measures and outcomes (PERForm) and Society of Thoracic Surgeons (STS) data forms that were matched across all participating institutions. Data from PERForm are noted in gray and data from the STS are noted in black.
