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.
Fitted odds ratios of TB derived from age-adjusted logistic regression model with a log transformed variable for pack years among daily smokers of the 2011 National Adult Tobacco Survey of Cambodia*. *referent categories for number of cigarettes and pack years were 2.5 cigarettes and 0.7 pack-years, respectively.
