These analyses use data collected on cigarette use and snus use. Interview questions relevant to these analyses include: whether the participant had ever smoked or used snus; daily cigarette consumption; weekly snus consumption; and the frequency with which they smoked/used snus. We considered an individual as a ‘regular smoker’ or a ‘ regular snus user’ if at least one of the following was true: (i) they reported ever regularly smoking/snusing; (ii) they reported at least 1 year of smoking/snusing; (iii) they reported weekly use of cigarettes/snus. We will refer to regular use (RU) of cigarettes as RUC, and regular use of snus as RUS.
