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Allergy in day care children: prevalence and environmental risk factors

Katja Hatakka1, Laura Piirainen, Sara Pohjavuori

  • 1Valio R&D, Helsinki, Finland.

Acta Paediatrica (Oslo, Norway : 1992)
|February 3, 2009
PubMed

Insights

Breastfeeding for six months or more may protect children from atopic diseases. However, older age and parental history of atopy increase a child's risk for these conditions.

Area of Science:

  • Pediatrics
  • Environmental Health
  • Epidemiology

Background:

  • Atopic diseases are common in children.
  • Environmental factors play a role in atopy development.

Purpose of the Study:

  • Investigate atopic disease prevalence in Finnish daycare children.
  • Examine the relationship between atopy and environmental factors.

Main Methods:

  • Cross-sectional study of 594 children (aged 1-6 years) in Helsinki, Finland.
  • Parental questionnaires collected data on atopic disease history and environmental exposures.

Main Results:

  • Prevalence: Asthma (0.9%-5.5%), Eczema (16%), Allergic Rhinitis (5%-9%).
  • Breastfeeding (≥4-6 months) reduced atopy risk (OR=0.60).
  • Increased risk with older age (5-6 yrs) and parental atopy history (OR=1.89-3.17).

Conclusions:

  • Findings support breastfeeding for at least six months to protect against atopic diseases.
  • Older age and parental atopy history are significant risk factors for childhood atopy.
Abstract

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