Figure 1.
Flow of participants. *Demographic information by respondent status is presented in online supplemental table 1. TDF, Theoretical Domains Framework.
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.