Smoking | | | | | | | | |
Non-smokers + occasional smokers | 138 | 18 | | 1.00 | | | 1.00 | |
0 to ≤20 packyears + other smokers* | 355 | 196 | 1.28 (0.27) | 3.59 | 2.10 to 6.13 | 1.44 (0.27) | 4.21 | 2.50 to 7.10 |
20 to ≤40 packyears | 232 | 359 | 2.23 (0.27) | 9.29 | 5.45 to 15.83 | 2.45 (0.27) | 11.56 | 6.87 to 19.43 |
40+ packyears | 114 | 266 | 2.60 (0.28) | 13.45 | 7.73 to 23.41 | 2.87 (0.28) | 17.65 | 10.30 to 30.26 |
| | | | | | | | |
Duration of asbestos exposure† | | | | | | | | |
Non-exposed | 557 | 495 | | 1.00 | | | 1.00 | |
<940 lhr | 110 | 99 | −0.03 (0.17) | 0.97 | 0.70 to 1.36 | −0.11 (0.16) | 0.90 | 0.65 to 1.23 |
940–5280 lhr | 88 | 121 | 0.36 (0.17) | 1.44 | 1.03 to 2.01 | 0.33 (0.16) | 1.40 | 1.01 to 1.93 |
>5280 lhr | 84 | 124 | 0.39 (0.18) | 1.47 | 1.04 to 2.08 | 0.38 (0.16) | 1.46 | 1.06 to 2.02 |