Prevalences of sensitisation to specific allergens, expressed in percentages
| Not living on a farm, n = 202 | Living on a farm, n = 231 (50, 65, 116)* | p Value† | Living on a dairy farm, n = 113 (12, 19, 82) | Living on a farm with other types of animal husbandry, n = 38 (8, 11, 19) | Living on a crop farm, n = 80 (30, 35, 15) | p Value‡ | |
|---|---|---|---|---|---|---|---|
| *Within each category, the first number in parentheses indicates the number of subjects who did not actively participate in farm work, the second number indicates half time farm workers, and the third number indicates full time farm workers. | |||||||
| †Fisher’s exact test between the groups “not living on a farm” and “living on a farm”. | |||||||
| ‡χ2 test between the groups “not living on a farm”, “dairy farm”, “other animal husbandry”, and “crop farm”. | |||||||
| Timothy grass | 9.4 | 5.6 | 0.14 | 2.7 | 5.3 | 10.0 | 0.11 |
| Birch | 10.4 | 5.2 | 0.047 | 2.7 | 5.3 | 8.8 | 0.08 |
| Mugwort | 6.9 | 5.6 | 0.69 | 1.8 | 10.5 | 8.8 | 0.11 |
| Any of the pollens | 17.3 | 10.4 | 0.049 | 4.4 | 15.8 | 16.3 | 0.01 |
| Dog | 13.9 | 10.8 | 0.38 | 6.2 | 15.8 | 15.0 | 0.15 |
| Cat | 10.4 | 6.5 | 0.16 | 3.5 | 2.6 | 12.5 | 0.047 |
| Dog or cat | 15.8 | 12.1 | 0.27 | 7.1 | 15.8 | 17.5 | 0.11 |
| House dust mite | 7.9 | 8.2 | 1.0 | 8.0 | 7.9 | 8.8 | 1.0 |
| Cockroach | 8.9 | 11.3 | 0.43 | 12.4 | 13.2 | 8.8 | 0.68 |
| Storage mite | 10.9 | 8.7 | 0.52 | 11.5 | 7.9 | 5.0 | 0.41 |
| Horse | 2.5 | 4.8 | 0.31 | 4.4 | 0.0 | 7.5 | 0.13 |
| Bovine dander | 0.0 | 7.8 | <0.0001 | 12.4 | 2.6 | 3.8 | <0.0001 |
| Any of the allergens | 37.1 | 34.6 | 0.62 | 31.9 | 36.8 | 37.5 | 0.79 |