Cancer site | Length (years) | N of exposed cases | Categorical cumulative exposure | Continuous cumulative exposure (5-year increase) | ||
OR | (95% CI) | OR | (95% CI) | |||
All cancers | 1–10 | 363 | 0.86 | (0.75 to 0.97) | 1.01 | (1.01 to 1.02) |
11–20 | 505 | 1.00 | (0.89 to 1.12) | |||
21+ | 3 631 | 1.09 | (1.04 to 1.13) | |||
Lung | 1–10 | 57 | 1.75 | (1.19 to 2.56) | 1.08 | (1.07 to 1.10) |
11–20 | 80 | 1.71 | (1.23 to 2.36) | |||
21+ | 587 | 1.91 | (1.68 to 2.17) | |||
Oesophagus | 1–10 | 8 | 1.12 | (0.45 to 2.83) | 1.08 | (1.03 to 1.12) |
11–20 | 14 | 1.55 | (0.76 to 3.16) | |||
21+ | 95 | 1.72 | (1.24 to 2.39) | |||
Stomach | 1–10 | 51 | 0.81 | (0.58 to 1.13) | 1.01 | (1.00 to 1.03) |
11–20 | 71 | 0.95 | (0.71 to 1.27) | |||
21+ | 596 | 1.09 | (0.98 to 1.22) | |||
Colorectal | 1–10 | 62 | 0.95 | (0.70 to 1.30) | 1.00 | (0.98 to 1.01) |
11–20 | 85 | 1.26 | (0.95 to 1.67) | |||
21+ | 485 | 0.96 | (0.85 to 1.08) | |||
Liver | 1–10 | 17 | 0.82 | (0.45 to 1.47) | 0.99 | (0.96 to 1.01) |
11–20 | 26 | 0.87 | (0.52 to 1.45) | |||
21+ | 197 | 0.93 | (0.77 to 1.14) | |||
Biliary tract | 1–10 | 2 | 0.52 | (0.11 to 2.47) | 1.01 | (0.97 to 1.07) |
11–20 | 10 | 1.03 | (0.47 to 2.23) | |||
21+ | 56 | 1.02 | (0.70 to 1.50) | |||
Pancreas | 1–10 | 9 | 1.60 | (0.66 to 3.87) | 1.09 | (1.05 to 1.14) |
11–20 | 15 | 2.46 | (1.17 to 5.19) | |||
21+ | 91 | 1.74 | (1.26 to 2.39) | |||
Bladder | 1–10 | 23 | 1.03 | (0.61 to 1.74) | 1.04 | (1.02 to 1.07) |
11–20 | 30 | 1.64 | (1.00 to 2.69) | |||
21+ | 224 | 1.39 | (1.15 to 1.69) |
*ORs and 95% CIs were calculated by conditional logistic regression with multiple imputation, matched for age categories (5-year categories), hospital (34 hospitals) and year of admission (1-year) with additional adjustment for smoking status, alcohol consumption status and longest occupation held (the reference for categorical cumulative exposure was never exposed).