Comparison of the knowledge, attitude and practice of Iranian college students about tobacco use in comparison to their American and Chinese counterparts.

Objectives: The purpose of this survey was to compare the knowledge, attitude and practice of Iranian, American and Chinese college students about tobacco use.

Methods: In this cross-sectional study, a questionnaire that was designed for the first time in comparative studies for the purpose of gathering information from American and Chinese college students was used. The students were selected by convenience sampling.