Table 5 Multiple logistic regression analysis of hay fever and asthma (European Community Respiratory Health Survey definition) in farmers (n = 1798).
| Hay fever, adjusted OR (95% CI) | Asthma, adjusted OR (95% CI) | |
|---|---|---|
| Organic farming | ||
| No | 1 | 1 |
| Yes | 1.2 (0.8 to 1.7) | 0.7 (0.4 to 1.2) |
| Current farm type | ||
| Crops only | 1 | 1 |
| Livestock | 0.5 (0.3 to 0.9) | 1 (0.5 to 2.2) |
| Childhood farming environment | ||
| No | 1 | 1 |
| Crops only | 0.5 (0.3 to 0.9) | 0.5 (0.2 to 1.2) |
| Livestock | 0.4 (0.3 to 0.7) | 0.6 (0.4 to 1.2) |
| Disinfectant use | ||
| None | 1 | 1 |
| QACs | 2.1 (1 to 4.4) | 1.7 (0.7 to 3.9) |
| Other disinfectants | 1.5 (0.9 to 2.8) | 1.4 (0.7 to 2.9) |
| Hay fever in parents or siblings | ||
| No | 1 | |
| Yes | 4.4 (3 to 6.3) | — |
| Asthma in parents or siblings | ||
| No | 1 | |
| Yes | — | 3.6 (2.3 to 5.7) |
QAC, quaternary ammonium compounds.
OR are adjusted for age, smoking habits, sex and all other variables in the model.
– Variable not included in the model.