Prevalence rates (%) of allergic sensitisation and allergic and respiratory morbidity in the French 6 Cities Study in the entire sample population (n=6590) and in the restricted sample of children who had a clinical examination during the same week as air quality assessments (n=4643)
| All (n=6590) | Restricted sample (n=4643) | |||||||
| Health outcome | Boys | Girls | p Value | All | Boys | Girls | p Value | All |
| During air pollution assessment | ||||||||
| EIA | 9.2 | 8.3 | 0.2269 | 8.7 | 10.0 | 8.5 | 0.0872 | 9.2 |
| Past year (current) | ||||||||
| Rhinoconjunctivitis | 13.1 | 10.7 | 0.0074 | 11.8 | 11.2 | 0.0840 | 12.1 | |
| Asthma | 9.0 | 4.9 | <0.0001 | 6.9 | 9.5 | 5.0 | <0.0001 | 7.2 |
| Allergic asthma | 5.4 | 2.6 | <0.0001 | 4.2 | 6.2 | 2.9 | <0.0001 | 4.7 |
| Non-allergic asthma | 2.8 | 1.8 | 0.0111 | 2.3 | 2.8 | 1.5 | 0.0051 | 2.1 |
| SPT positivity | ||||||||
| All allergens | 32.7 | 23.8 | <0.0001 | 28.0 | 33.3 | 25.3 | <0.0001 | 29.2 |
| Indoor allergens | 24.5 | 17.6 | <0.0001 | 21.0 | 22.4 | 18.7 | <0.0001 | 22.0 |
| Outdoor allergens | 14.8 | 10.0 | <0.0001 | 12.4 | 14.7 | 10.9 | 0.0002 | 12.8 |
| Moulds allergens | 3.7 | 1.8 | <0.0001 | 2.7 | 3.8 | 1.7 | <0.0001 | 2.7 |
EIA, exercise-induced asthma; SPT, skin prick test.