Figure 1.
Channels of awareness of e-cigarettes among current smokers (n = 6,311), former smokers (n = 3,709), and never-smokers (n = 5,551) who have heard of e-cigarettes.
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.