| Exposures | Number of exposed/unexposed children | Outcome | |||
| Doctor’s diagnosis of asthma OR (95% CI)† | Current symptoms of rhinoconjunctivitis OR (95% CI)† | Allergic symptoms* OR (95% CI)† | Atopic sensitisation (⩾3.5 kU/l) OR (95% CI)† | ||
| Ever regular farm animal contact | 1852/1252 | 0.91 (0.66 to 1.26) | 0.71 (0.50 to 1.01) | 0.82 (0.63 to 1.07) | 0.71 (0.55 to 0.91) |
| Current‡ regular farm animal contact | 1513/1591 | 0.80 (0.57 to 1.11) | 0.70 (0.48 to 1.01) | 0.78 (0.60 to 1.03) | 0.74 (0.58 to 0.96) |
| Current regular visits to stable or barn | 1369/1719 | 0.54 (0.37 to 0.79) | 0.64 (0.42 to 0.97) | 0.58 (0.43 to 0.79) | 0.67 (0.51 to 0.89) |
| Mother’s farm animal contact during pregnancy | 1280/1730 | 0.72 (0.48 to 1.05) | 0.58 (0.38 to 0.89) | 0.65 (0.48 to 0.89) | 0.75 (0.56 to 0.96) |
| Mother worked regularly in stable or barn during pregnancy | 1028/2065 | 0.51 (0.34 to 0.78) | 0.56 (0.34 to 0.90) | 0.54 (0.39 to 0.77) | 0.62 (0.45 to 0.85) |
| Ever consumption of farm milk | 1319/1581 | 0.50 (0.35 to 0.70) | 0.66 (0.45 to 0.97) | 0.56 (0.42 to 0.74) | 0.95 (0.74 to 1.22) |
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.
†Odds ratios (OR) (with 95% confidence intervals (CI)) estimated from a logistic regression model, adjusting for gender, heredity and study group.
‡ Current refers to exposures that have occurred during the last 12 months (for more detailed information see Methods).