An official website of the United States government
Here's how you know
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 flow diagram for the 2-group randomized clinical trial is displayed. Participant screening, recruitment, randomization and follow-up rates at 12 and 24 weeks post-randomization are shown.