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Table 3 Adjusted odds ratios* and 95% C.I. according highest occupational exposure to asbestos across cigarette pack-year smoking categories

From: Occupational exposure to asbestos and lung cancer in men: evidence from a population-based case-control study in eight Canadian provinces

  Cigarette smoking (pack-years)
Highest occupational exposure to asbestos < 10 10 - <40 ≥ 40
  N OR* 95% C.I. N OR* 95% C.I. N OR* 95% C.I.
None 84 1.0 - 630 1.0 - 678 1.0 -
Low 13 1.54 0.79 – 3.00 90 1.28 0.91 – 1.80 85 0.88 0.58 – 1.35
Medium or high 2 2.01 0.39 – 10.43 20 2.30 1.09 – 4.84 16 2.50 0.73 – 9.28
  1. N = number of lung cancer cases.
  2. * adjusted for age, province, occupational exposure to diesel and silica, and second hand cigarette smoke.