[Nasal congestion and earache--upper respiratory tract infections in 4-year-old children]

Area of Science:

• Pediatrics
• Epidemiology
• Public Health

Background:

• Limited population-based research exists on pediatric upper respiratory infections in Norway.
• Understanding risk factors for common infections in young children is crucial for public health.

Purpose of the Study:

• To investigate the prevalence and risk factors of upper respiratory infections (URIs) in four-year-old children in Vestfold county, Norway.
• To identify potential environmental or social determinants influencing URI incidence.

Main Methods:

• A cross-sectional study involving a questionnaire administered to parents of 1912 four-year-old children.
• Participation rate was 79%, with data collected on health, diseases, and living conditions.
• Logistic regression analysis was used to assess risk factors, controlling for variables like parental education and breastfeeding history.

Main Results:

• Approximately 33% of children experienced recurrent common colds (≥4 episodes/year), and 33% had at least one episode of otitis.
• Day-care center attendance was a significant risk factor for both recurrent common colds (OR 1.50) and otitis (OR 1.42).
• Children with recurrent URIs or otitis had nearly ten times higher healthcare utilization.

Conclusions:

• Day-care attendance significantly influences URI occurrence in four-year-olds, though to a lesser extent than in younger children.
• Other investigated environmental factors (maternal education, housing, siblings, passive smoking, breastfeeding) showed minimal impact.
• Findings suggest limited opportunities for prophylaxis based on environmental modifications other than day-care attendance.