Summary of case-control studies examining livestock farming and lymphohaematopoietic cancers
| First author, yearref | Population | Cancer | Exposure assessment | Exposure | OR (95% CI) | ||||
| Milham, 1971104 | Deaths in two US states | Leukaemia | Occupation on death certificate | Poultry farmer | p<0.05 | ||||
| Dairy farmer | p>0.05 | ||||||||
| Cattle farmer | p>0.05 | ||||||||
| Blair, 197947 | Deaths in one US state, farmers only (year of birth 1901–43) | Leukaemia | Per capita agricultural characteristics | Poultry | 1.6 (1.0 to 2.6) | ||||
| Cattle | 1.7 (1.1 to 2.7) | ||||||||
| Pigs | 2.0 (1.3 to 3.3) | ||||||||
| Cantor, 198448 | Deaths in one US state (excluding deaths in capital city) all farmers only | Multiple myeloma | Per capita agricultural characteristics | Poultry | 1.6 (1.0 to 2.7) | ||||
| Cattle | 1.2 (0.8 to 2.0) | ||||||||
| Pigs | 1.3 (0.8 to 2.0) | ||||||||
| Dairy | 1.3 (0.8 to 2.1) | ||||||||
| Pearce, 1986105 | Incident registered cancers in New Zealand, cancer controls | Leukaemia | Occupation on cancer registration | Livestock farm | 3.0 (1.2 to 7.3) | ||||
| Dairy farm | 1.2 (0.4 to 3.7) | ||||||||
| Poultry farm | 0 Cases | ||||||||
| Pearce, 1986106 | Incident registered cancers in New Zealand, cancer controls | Multiple myeloma | Telephone interview, self reported occupation | Sheep farm | 1.9 (1.0 to 3.6) | ||||
| Dairy farm | 1.4 (0.8 to 2.5) | ||||||||
| Mixed farm | 1.3 (0.6 to 2.6) | ||||||||
| Poultry farm | 0.9 (0.1 to 8.4) | ||||||||
| Clavel, 1995107 | Incident cancers in nine French hospitals | Hairy cell leukaemia | Self reported occupation | Cattle breeding | 1.9 (1.1 to 3.1 | ||||
| Sheep breeding | 1.8 (0.9 to 3.6) | ||||||||
| Pig breeding | 1.4 (0.6 to 2.8) | ||||||||