Association of breast feeding with wheeze, atopy and asthma
| Outcome and age (years) | Breast fed | Not breast fed | Crude OR (95% CI); p value | Adjusted* OR (95% CI); p value |
| Wheeze age 1 | 39/177 (22.0%) | 119/284 (41.9%) | 0.39 (0.26 to 0.60); <0.0001 | 0.44 (0.28 to 0.69); <0.005 |
| Atopy age 1 | 37/178 (20.8%) | 48/291 (16.5%) | 1.33 (0.83 to 2.14); 0.24 | 1.29 (0.78 to 2.12); 0.32 |
| Wheeze age 7 | 42/170 (24.7%) | 86/276 (31.2%) | 0.73 (0.47 to 1.12); 0.14 | 0.70 (0.45 to 1.10); 0.13 |
| Atopy age 7 | 46/161 (28.6%) | 63/269 (23.4%) | 1.31 (0.84 to 2.04); 0.24 | 1.20 (0.75 to 1.91); 0.45 |
| Asthma age 7 | 29/170 (17.1%) | 45/276 (16.3%) | 1.06 (0.63 to 1.76); 0.83 | 0.98 (0.57 to 1.67); 0.94 |
| Wheeze age 15 | 45/142 (31.7%) | 70/214 (32.7%) | 0.95 (0.61 to 1.50); 0.84 | 0.98 (0.61 to 1.59); 0.98 |
| Asthma age 15 | 33/142 (23.2%) | 43/214 (20.1%) | 1.20 (0.72 to 2.01); 0.48 | 1.19 (0.69 to 2.05); 0.53 |
| Wheeze age 23 | 39/124 (31.5%) | 59/175 (33.7%) | 0.90 (0.55 to 1.48); 0.39 | 0.83 (0.49 to 1.39); 0.47 |
| Atopy age 23 | 28/49 (57.1%) | 42/70 (60.0%) | 0.89 (0.42 to 1.87); 0.76 | 0.78 (0.34 to 1.82); 0.57 |
| Asthma age 23 | 20/123 (15.6%) | 33/175 (19.0%) | 0.83 (0.45 to 1.52); 0.54 | 0.79 (0.41 to 1.52); 0.48 |
*Adjusted for randomisation group, gender, parental allergy and social class at age 1.