Table 1
Cancer incidence (SIR) among exposed and unexposed subcohorts
| Cancer diagnosis | ICD-7 | Exposed | Unexposed lumberjacks, male (n=241) person-years=6694.0 | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Foremen (n=151-150) person-years=345.3 |
Lumberjacks, male (n=139) person-years=4079.2 | Lumberjacks, female (n=103) person-years=3408.0 | ||||||||||||||||||
| Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI | |||||
| All sites | 140–209 | 6 | 2.19 | 274 | 100 to 596 | 12 | 16.72 | 72 | 37 to 125 | 12 | 14.60 | 82 | 42 to 144 | 37 | 43.05 | 86 | 61 to 118 | |||
| Oral cavity | 143–144 | 0 | 0.01 | — | — | 0 | 0.05 | — | — | 1 | 0.05 | 2000 | 26 to 11128 | 0 | 0.13 | — | — | |||
| Stomcah | 151 | 0 | 0.19 | — | — | 2 | 1.34 | 149 | 17 to 539 | 1 | 0.53 | 189 | 2 to 1050 | 2 | 3.78 | 53 | 6 to 191 | |||
| Colon | 153 | 0 | 0.14 | — | — | 1 | 1.13 | 88 | 1 to 492 | 1 | 0.98 | 102 | 1 to 568 | 4 | 2.91 | 137 | 37 to 352 | |||
| Rectum and anus | 154 | 0 | 0.12 | — | — | 1 | 0.89 | 112 | 1 to 625 | 0 | 0.53 | — | — | 3 | 2.39 | 126 | 25 to 367 | |||
| Liver primary | 155 | 0 | 0.05 | — | — | 2 | 0.40 | 500 | 56 to 1805 | 0 | 0.40 | — | — | 1 | 1.05 | 95 | 1 to 530 | |||
| Pancreas | 157 | 1 | 0.09 | 1111 | 15 to 6182 | 0 | 0.62 | — | — | 0 | 0.45 | — | — | 2 | 1.65 | 121 | 14 to 438 | |||
| Larynx | 161 | 0 | 0.03 | — | — | 0 | 0.17 | — | — | 0 | 0.03 | — | — | 1 | 0.45 | 222 | 3 to 1236 | |||
| Bronchus and lung primary | 162.1 | 1 | 0.24 | 417 | 5 to 2318 | 0 | 1.67 | — | — | 1 | 0.46 | 217 | 3 to 1210 | 5 | 4.34 | 115 | 37 to 269 | |||
| Prostate | 177 | 2 | 0.43 | 465 | 52 to 1679 | 3 | 3.49 | 86 | 17 to 251 | — | — | — | — | 4 | 9.40 | 43 | 11 to 109 | |||
| Kidney | 180 | 0 | 0.10 | — | — | 0 | 0.71 | — | — | 0 | 0.45 | — | — | 4 | 1.86 | 215 | 58 to 551 | |||
| Bladder | 181 | 1 | 0.13 | 769 | 10 to 4280 | 1 | 0.98 | 102 | 1 to 568 | 0 | 0.26 | — | — | 1 | 2.53 | 40 | 1 to 220 | |||
| Melanoma | 190 | 0 | 0.04 | — | — | 0 | 0.34 | — | — | 1 | 0.29 | 345 | 5 to 1919 | 0 | 0.71 | — | — | |||
| Other skin tumours | 191 | 1 | 0.06 | 1667 | 22 to 9273 | 0 | 0.56 | — | — | 0 | 0.26 | — | — | 3 | 1.50 | 200 | 40 to 584 | |||
| Brain | 193 | 0 | 0.06 | — | — | 0 | 0.49 | — | — | 0 | 0.45 | — | — | 1 | 1.09 | 92 | 1 to 510 | |||
| Unspecified of unknown site | 199 | 0 | 0.09 | — | — | 0 | 0.69 | — | — | 0 | 0.62 | — | — | 3 | 1.76 | 170 | 34 to 498 | |||
| Haematopoetic tumours | 200–209 | 0 | 0.19 | — | — | 1 | 1.46 | 68 | 1 to 381 | 1 | 0.84 | 119 | 2 to 662 | 3 | 3.56 | 84 | 17 to 246 | |||
| Non-Hodgkin's lymphoma | 200 | 0 | 0.01 | — | — | 1 | 0.52 | 192 | 3 to 1070 | 1 | 0.33 | 303 | 4 to 1686 | 1 | 1.23 | 81 | 1 to 452 | |||
| Multiple myeloma | 203 | 0 | 0.03 | — | — | 0 | 0.25 | — | — | 0 | 0.15 | — | — | 1 | 0.65 | 154 | 2 to 856 | |||
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↵1-150 One of the 16 foremen died before 1958, so for the cancer incidence study only 15 people were left at risk.
