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.
Evidence network of the effect of screening options on CRC mortality. Traditional meta-analysis-generated direct comparisons are denoted by solid lines and NMA-generated indirect comparisons are denoted by dashed lines. Direction of the arrow denotes superiority.
