For women smokers, the gender gap is narrowing.
McIntosh
H
H
D005260:Female; D006801:Humans; D008297:Male; D009790:Occupations / Q000706:statistics & numerical data; D017678:Sex Distribution; D012907:Smoking / Q000453:epidemiology* / Q000208:ethnology; D014481:United States / Q000453:epidemiology