The prevalence of childhood atopic eczema in a general population

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Background: Atopic eczema has become more common during recent decades, but few studies have looked at its prevalence in the general community.

Objective: Our purpose was to ascertain the prevalence of atopic eczema, its age of onset, and its relationship to breast-feeding and ear piercing in a general practice population.

Methods: Children (N = 1104), aged 3 to 11 years, were identified from a computerized register in a socially and ethnically mixed English general practice population of 13,314. Of these, 1077 children (97,6% recruitment) were interviewed with parents or guardians, and the resultant data were recorded on a survey form.

Results: The lifetime occurrence of atopic eczema was 20% in boys (12% in the past year) and 19% in girls (11 % in the past year). prevalence in the past year was 10% to 14% in boys aged 3 to 11 years but fell in girls from 15% at 3 to 5 years to 8% at 9 to 11 years. Atopic eczema developed in the first 12 months of life in 60% of the children who had the condition, and it developed in the first 6 months of life in three quarters of these children. Ear piercing had been performed in 35% of girls and 3% of boys and was most prevalent in social classes 3, 4, and 5. More than half the girls aged 9 to 11 years had pierced ears. Breast-feeding did not affect the prevalence of atopic eczema.

Conclusion: The lifetime prevalence of atopic eczema was 20% in children aged 3 to 11 years. There was no evidence that ear piercing perpetuated eczema in this age group. Breast-feeding did not protect against the development of atopic eczema.

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    Supported by a grant from the Scientific Foundation Board of the Royal College of General Practitioners.

    a

    From Sherwood House Practice, Smethwick.

    b

    From Section of Dermatology, University Department of Medicine, Royal Hallamshire Hospital.

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