Table 2

Allergen levels and prevalence of asthma in cross-sectional studies in children: other allergens

ReferenceAgeAllergen levelNon-asthmaticsAsthmaticsORPopulation attributable riskDefinition of asthma
No.ExposedNo.Exposed
Sporik et al 21 1–15 (asthmatics)>8 μg/g Fel d14439%8246%1.42-150 13%Asthma patients for hospital treatment
10–12 (non-asthmatics)
Callet al 22 3–15⩾10 μg/gFel d1225%353%0.62-150 −2%Asthma patients for hospital treatment
Platts Mills et al 24,
Ingram et al a 27
12–14>2 μg/gFel d14791%5086%0.62-150 −57%Wheezing
>10 μg/g Fel d 12-a 4749%  (45%)2-a 50  (51)58%  (57%)2-a 1.42-150  (1.62-150)2-a 17%  (21%)2-a Wheezing
Call et al 22 3–15⩾2 units/gBla g22286%3586%0.92-150 −10%Asthma patients for hospital treatment
Platts Mills et al 23,
Ingram et al 27
12–14>2 units/gBla g2472%502%0.92-150  −0.2%Wheezing
>10 units/g Bla g2470%500% – –
>2 μg/g Can f14794%5090%0.62-150 −60%
>10 μg/g Can f12-a 4768% (62%)2-a 5070% (52%)2-a 1.12-150 (0.72-150)2-a 6% (−22%)2-a
  • 2-150 Calculated.

  • 2-a Same study population and exposure but different results (results from Ingram et al 27 in parentheses).