Greece ratified the WHO Framework Convention on Tobacco Control (FCTC) on January 27, 2006. Greece is one of six countries (the others are Germany, Hungary, Poland, Romania, and Spain) that make up the ITC 6 European (6E) Country Project; a component of the larger EUREST PLUS Project. Two survey waves of ITC 6E Survey have been conducted among a cohort of adult smokers aged 18 and older.