Figure 1.
Pre-test results.
Abbreviations: CVD, cardiovascular disease; diff, difference; STIs, sexually transmitted infections; trans, transmission.
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.