Table 1

Associations between cigarette smoking and lung cancer, ATBC Study, Finnish men

No. cases (%; n = 319)No. controls (%; n = 333)OR (95% CI)aP-trendb
Years smoking
 <3774 (38)121 (62)1.00 (reference)<0.01
 37–42114 (51)109 (49)2.12 (1.37–3.29)
 >42131 (56)103 (44)3.48 (1.98–6.12)
Cigarettes/day
 <1982 (38)134 (62)1.00 (reference)0.08
 19–22112 (54)95 (46)1.77 (1.23–2.56)
 >22125 (55)104 (45)1.70 (1.05–2.73)
  • a OR and 95% CI adjusted for age, years of smoking or daily cigarettes smoked, and intervention assignment.

  • b Ps for linear trend based upon continuous variable included into the multivariate models.