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.
NB: The line represents the cost-effectiveness threshold, or frontier. All interventions or combinations of interventions along this line are more cost effective than intervention or combination of interventions left of the line.
