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.
Examples of cohort entry and follow-up.
Cohort entry required a diagnosis of breast cancer with related surgery and a diagnosis and treatment of RA or IBD. Follow-up started with the latest of the following: date of the 1-year anniversary of the breast cancer surgery (top and bottom panels) or the date of first recorded diagnosis of RA or IBD and first treatment with a DMARD (middle panel).
