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.
Person-item map and histogram depicting thresholds on the spectrum of RRE for Study 4. See Figure 1 note. Bars in darker gray indicate gaps in RRE coverage left by the RED-13. Bars in lighter gray indicate gaps in coverage left by RED-9. Stars indicate items added to the RED-9 to form the RED-13.
