| Exposure | % rated as: | Adjusted model* p Value | ||||
| None | Low | Medium | High | Total | ||
| Lead (organic) | 99.2 | 0.6 | 0.2 | 0.1 | 100.0 | 0.088† |
| Lead (inorganic) | 85.4 | 12.0 | 2.2 | 0.4 | 100.0 | 0.175 |
| Manganese | 84.3 | 12.6 | 2.4 | 0.8 | 100.0 | 0.924 |
| Mercury (organic) | 99.4 | 0.5 | 0.0 | 0.0 | 100.0 | 0.531‡ |
| Mercury (inorganic) | 98.4 | 1.0 | 0.3 | 0.2 | 100.0 | 0.156† |
| Boron | 82.8 | 14.7 | 2.0 | 0.6 | 100.0 | 0.296 |
| All other metals | 79.2 | 15.2 | 3.7 | 1.9 | 100.0 | 0.720 |
| Carbon disulphide | 94.7 | 5.0 | 0.2 | 0.0 | 100.0 | 0.306† |
| Glycol ethers | 75.6 | 18.6 | 4.2 | 1.6 | 100.0 | 0.006 |
| Methylene chloride | 85.8 | 11.3 | 2.2 | 0.7 | 100.0 | 0.744 |
| Styrene | 90.6 | 7.9 | 1.2 | 0.3 | 100.0 | 0.394 |
| Tetrachloroethylene | 92.4 | 5.4 | 1.9 | 0.2 | 100.0 | 0.970 |
| All other VOCs | 65.2 | 25.3 | 7.0 | 2.5 | 100.0 | 0.020 |
| Pesticides | 96.5 | 2.0 | 1.1 | 0.4 | 100.0 | 0.087 |
| Heat | 89.5 | 4.7 | 3.0 | 2.8 | 100.0 | 0.731 |
| Vibration | 66.3 | 17.3 | 10.3 | 6.1 | 100.0 | 0.607 |
| Radiation (non-ionising) | 86.9 | 7.6 | 3.5 | 2.1 | 100.0 | 0.344 |
| Radiation (ionising) | 95.1 | 3.1 | 1.5 | 0.3 | 100.0 | 0.805 |
VOC, volatile organic compound.
Intensity is compared with other occupational exposures in the UK (see text), n = 2118.
*In a multi-level logistic regression model to assess relation to case status including: surgery to the testes, previous conception, use of alcohol, and wearing boxer shorts, clustered within centre.
†“High” and “moderate” combined to eliminate empty cells.
‡“High”, “moderate” and “low” combined to eliminate empty cells.