Overall and Sex-specific trends* in current smoking of Long/Ultra-long cigarettes among U.S. adult Smokers a, National Health and Nutrition Examination Survey, 1999/2000 to 2011/2012
Note: FTC=Federal Trade Commission; NHANES=National Health and Nutrition Examination Survey
a The denominator for all analyses was current cigarette smokers aged ≥20 years (i.e. respondents who reported that they had smoked at least 100 cigarettes during their lifetime, and smoked daily or on some days at the time of the survey).