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.
Cumulative fraction of patients with dysplasia or colorectal cancer (CRC), and surviving fraction of patients remaining free of dysplasia or colorectal cancer. Cumulative fractions were calculated using equations (1) and (3) with %CRC30y = 30%, lag = three years, survival = 100% − cumulative fraction.
