SMRs for lung cancer by exposure category
| Cumulative exposure mg/m3-years | |||||||||
| (A) Original data* | |||||||||
| 0− | 0.25− | 0.50− | 1.00− | 1.50− | 2.00− | 3.00− | 5.00− | All | |
| Person-years | 29756.6 | 10148.0 | 15001.5 | 12910.5 | 9098.8 | 9726.3 | 8289.8 | 13171.4 | 108103.0 |
| Observed deaths | 29 | 15 | 28 | 22 | 22 | 26 | 29 | 30 | 201 |
| Expected deaths | 37.8 | 16.8 | 20.8 | 17.3 | 16.5 | 17.6 | 17.1 | 25.8 | 169.7 |
| SMR | 0.77 | 0.89 | 1.35 | 1.27 | 1.33 | 1.48 | 1.70 | 1.16 | 1.17 |
| (B) Revised cohort, mortality and employment data | |||||||||
| 0− | 0.25− | 0.50− | 1.00− | 1.50− | 2.00− | 3.00− | 5.00− | All | |
| Person-years | 24309.2 | 11271.0 | 14509.1 | 12996.1 | 9799.2 | 10365.5 | 9034.8 | 13513.7 | 105798.6 |
| Observed deaths | 28 | 22 | 27 | 29 | 22 | 27 | 40 | 29 | 224 |
| Expected deaths | 27.6 | 18.5 | 19.1 | 16.1 | 16.0 | 18.8 | 18.4 | 26.1 | 160.6 |
| SMR | 1.01 | 1.19 | 1.41 | 1.80 | 1.37 | 1.43 | 2.17 | 1.11 | 1.39 |
| (C) Inclusion of additional workers | |||||||||
| 0− | 0.25− | 0.50− | 1.00− | 1.50− | 2.00− | 3.00− | 5.00− | All | |
| Person-years | 31539.7 | 12626.6 | 15086.1 | 13440.6 | 10149.7 | 10564.3 | 9034.8 | 13513.7 | 115955.5 |
| Observed deaths | 43 | 24 | 27 | 30 | 24 | 27 | 40 | 29 | 244 |
| Expected deaths | 36.4 | 19.9 | 20.2 | 16.9 | 16.7 | 19.4 | 18.4 | 26.1 | 174.0 |
| SMR | 1.18 | 1.20 | 1.33 | 1.77 | 1.44 | 1.39 | 2.17 | 1.11 | 1.40 |
*Numbers in bold differ from those in table IV of Attfield and Costello but are in agreement with the numbers of observed and expected deaths presented in their table.