Allergic diseases attributable to atopy in a population sample of Asian children

Area of Science:

• Allergy and Immunology
• Pediatric Health
• Epidemiology

Background:

• The contribution of atopy to allergic diseases in Asian populations is not well-established.
• Understanding this link is crucial for public health strategies and early intervention.

Purpose of the Study:

• To estimate the population attributable risk (PAR) of atopy for physician-diagnosed asthma, rhinitis, and eczema in Asian school-age children.
• To identify specific allergens contributing to the burden of allergic diseases.

Main Methods:

• A population-based study of 1321 Asian children aged 5-18 years (Prediction of Allergies in Taiwanese CHildren - PATCH study).
• Assessment of serum allergen-specific immunoglobulin E for atopy diagnosis.
• Evaluation of physician-diagnosed asthma, rhinitis, and eczema using a modified International Study of Asthma and Allergies in Childhood questionnaire.

Main Results:

• Approximately 50.4% of asthma, 46.3% of rhinitis, and 46.7% of eczema cases were attributable to atopy.
• Population attributable risk (PAR) was higher in adolescents compared to younger children.
• Sensitization to mites showed the highest PARs (51.3-64.1%) for all three allergic diseases, followed by food sensitization.

Conclusions:

• Atopy accounts for a significant proportion of allergic diseases in Taiwanese school-age children.
• Mite sensitization is a major risk factor for allergic diseases in this population.
• Findings highlight the importance of managing atopy and mite exposure in pediatric allergy prevention and treatment.