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.
Kaplan–Meier curve of the probability of the primary outcome by postoperative day 7. p = 0.29 (hazard ratio, 0.89; 95% confidence interval, 0.68 to 1.10) by the log-rank test for the between-group difference in the probability of the primary outcome
