| Farm children n = 1307 | Steiner school children n = 686 | Farm reference children n = 654 | Steiner reference children n = 466 | |
| Allergic phenotypes (%) | ||||
| Doctor’s diagnosis of asthma | 6.2 | 7.0 | 11.6 | 12.9 |
| Current symptoms of rhinoconjunctivitis | 4.0 | 7.7 | 8.8 | 11.7 |
| Allergic symptoms* | 9.2 | 11.9 | 18.1 | 20.3 |
| Atopic sensitisation (allergen specific IgE ⩾0.35 kU/l) | 22.7 | 29.0 | 34.5 | 37.8 |
| Atopic sensitisation (allergen specific IgE ⩾3.5 kU/l) | 10.3 | 16.8 | 21.6 | 24.9 |
| Farm related exposures (%) | ||||
| Ever regular farm animal contact | 92.7 | 45.2 | 36.2 | 20.9 |
| Current regular farm animal contact | 82.7 | 30.2 | 26.3 | 12.0 |
| Current regular visits to stable or barn | 81.9 | 23.3 | 17.2 | 7.4 |
| Mother’s farm animal contact during pregnancy | 79.9 | 18.7 | 15.5 | 6.6 |
| Mother worked regularly in stable or barn during pregnancy | 70.7 | 9.7 | 5.4 | 1.9 |
| Ever consumption of farm milk | 72.5 | 39.4 | 20.7 | 7.8 |
| Current regular contact with farm animals, timing | ||||
| No current regular farm animal contact | 17.3 | 69.8 | 73.7 | 88.0 |
| Current farm animal contact initiated during first year | 53.2 | 10.3 | 8.5 | 1.9 |
| Current farm animal contact initiated after first year but >12 months ago | 15.8 | 9.1 | 5.9 | 1.3 |
| Current farm animal contact initiated within last 12 months | 13.7 | 10.8 | 12.0 | 8.8 |
PARSIFAL, Prevention of Allergy Risk factors for Sensitisation In children related to Farming and Anthroposophic Lifestyle.
*Doctor’s diagnosis of asthma and/or current symptoms of rhinoconjunctivitis.