From the Centers for Disease Control and Prevention. Prevalence of current cigarette smoking among adults and changes in prevalence of current and some day smoking--United States, 1996-2001.
D000328:Adult; D040343:Behavioral Risk Factor Surveillance System; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012907:Smoking / Q000453:epidemiology* / Q000639:trends*; D014481:United States / Q000453:epidemiology