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.
Predicted probabilities of e-cigarette susceptibility for linear trends by categories of race/ethnicity (top left), OTP ever use (top middle), e-cigarette harm perceptions (top right), sex (bottom left), and school level (bottom right) computed at average level of other variables.
