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 time-to-event analysis for A) time to index ulcerative colitis operation from initial ulcerative colitis diagnosis, B) time to treatment with 5-aminosalicylate medications, C) time to treatment with immunomodulatory medications, and D) time to treatment with biologic medications
