Figure 2.
Trends in tobacco screen time (in minutes) for the top 100 movies with the highest US box-office gross revenues from 1996 through 2009 by whether they were youth or adult rated.
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.