Table 3.

ORs and 95% CIs for duration smoked and number of cigarettes smoked per day, men only

Duration smoked (y)Cigarettes per day (cases/controls)
Total*
<2020 to <40≥40
<202.0 (1.0-3.9) 16/352.6 (1.3-5.3) 16/250.2 (0.03-1.7) 1/181.3 (0.8-2.3) 33/78
20-292.2 (1.3-3.8) 28/513.1 (1.9-5.1) 45/623.4 (1.8-6.5) 22/282.0 (1.3-3.1) 95/141
30-392.0 (1.2-3.3) 34/717.0 (4.7-10.6) 137/854.2 (2.5-7.1) 43/443.2 (2.1-4.7) 214/200
40-494.0 (2.5-6.5) 60/618.5 (5.7-12.6) 169/866.6 (3.9-10.9) 58/404.6 (3.1-6.8) 287/187
≥508.5 (5.3-13.6) 100/489.3 (6.1-14.1) 155/738.2 (4.4-15.1) 41/226.4 (4.3-9.5) 296/143
Total1.3 (0.8-2.3) 238/2661.7 (1.0-3.1) 522/3312.4 (1.4-4.1) 165/152
  • NOTE: ORs relative to never smokers (55 cases, 227 controls), adjusted for age, hospital region, fruit/vegetable consumption, and high-risk occupation.

  • * Duration smoked adjusted for intensity smoked and relative to never smokers (Ptrend < 0.0001).

  • Intensity smoked adjusted for duration smoked and relative to never smokers (Ptrend = 0.05).