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The clustering of respiratory diseases in early childhood

B G Kolnaar1, W J van den Bosch, H J van den Hoogen

  • 1Department of General Practice/Family Medicine, University of Nijmegen, The Netherlands.

Family Medicine
|February 1, 1994
PubMed

Insights

Early childhood respiratory illnesses are unevenly distributed and cluster together. Asthma, bronchitis, and pneumonia form one group, while tonsillitis, ear infections, and colds form another.

Area of Science:

  • Pediatric respiratory health
  • Epidemiology of childhood diseases

Background:

  • Early childhood respiratory morbidity may predict later-life asthma and chronic bronchitis.
  • Understanding the distribution and clustering of early respiratory diseases is crucial.

Purpose of the Study:

  • To analyze the distribution, interrelations, and clustering of respiratory morbidity in early childhood.
  • To identify patterns in respiratory illness occurrence.

Main Methods:

  • Prospective data collection on respiratory illness episodes in 1140 children (first five years).
  • Comparison of illness frequency to random Poisson distribution.
  • Factor analysis to identify illness clusters.

Main Results:

  • 53% of children experienced at least six respiratory illness episodes.
  • Respiratory illnesses were not randomly distributed and showed associations.
  • Factor analysis revealed two main clusters: (1) asthma, acute bronchitis, pneumonia; (2) tonsillitis, otitis media, common cold.

Conclusions:

  • Early childhood respiratory morbidity is unevenly distributed.
  • Distinct clusters of upper and lower respiratory tract illnesses were identified.
  • These identified clusters may be useful for research on long-term respiratory prognosis.
Abstract

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