Table 2

 Age adjusted odds ratios (OR) (95% confidence intervals (CI)) for “regular” and “now and then” snus use in relation to any lifetime cigarette smoking among males in the Swedish Twin Registry

Ever smoker*Never smokerOR (95%CI)
*”Ever smoker” includes men who reported smoking “regularly” and “now and then”. Men who smoked “at parties” were excluded since they did not contribute ages at onset of tobacco use.
†Men who began using snus before cigarettes.
Regular snus use262†4.1%97618.5%0.2 (0.2 to 0.3)
Now and then snus use29†0.5%601.1%0.5 (0.3 to 0.7)
Never used snus546695.4%423780.4%1.0