FIGURE 2.

Factors associated with snus use during pregnancy. In multivariate analysis, the following factors were identified as associated with the use of snus at some time during pregnancy (reference categories are presented in italic for each factor): living area (countryside (village) versus city (densely populated), city (less densely populated), suburb, countryside (outside village)); grand maternal cigarette smoking (no versus yes, do not know); country of origin (rest of the world and other nordic countries combined versus Norway or Sweden); previous and/or current smoking (no versus yes); marital status (married versus cohabitant, single, divorced/separated, other). Age was used as a continuous variable. OR: odds ratio. ^#: in utero smoking exposure of the index woman; *: p<0.05; **: p<0.01.