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.
The probability that any given strategy is cost-effective compared with others is plotted against a range of willingness-to-pay levels. AI indicates artificial intelligence.
