Asthma in Iranian Children: What the First National Survey Reveals
"Discover the prevalence of pediatric asthma across Iran and understand the key risk factors affecting young children."
Asthma is a significant chronic disease worldwide, and while much research has been conducted in developed countries, data from developing nations remains limited. This is especially true in eastern developing countries. Understanding the prevalence and characteristics of asthma in these regions is crucial for effective public health planning and resource allocation.
A recent national population-based survey in Iran sought to address this gap by evaluating the prevalence of pediatric asthma across the country. This study, the first of its kind in Iran, provides valuable insights into the condition's impact on Iranian children and identifies key factors contributing to its development.
Using a cross-sectional study design, researchers estimated asthma symptom prevalence using a randomized multistage stratified cluster sampling method. They surveyed 16,410 individuals aged 6-7 years and 16,850 individuals aged 13-14 years, employing a validated questionnaire based on the International Study of Asthma and Allergies in Childhood (ISAAC) core questions. Data was collected between November 2015 and February 2016.
Key Findings: Prevalence, Risk Factors, and Regional Differences
The survey revealed that the total prevalence of asthma among Iranian children was 10.9% (n=3624) with a 95% confidence interval of 10.6% to 11.2%. This figure indicates a significant health concern, highlighting the need for targeted interventions and improved management strategies.
- Age: Asthma was more prevalent among 13- to 14-year-olds (12.4%) compared to the 6- to 7-year-old group (9.4%, p<0.001).
- Gender: Males exhibited a higher prevalence of asthma (12.1%) than females (9.8%, p<0.001).
- Location: Children residing in urban areas showed a higher asthma prevalence compared to those in rural areas (p=0.003).
- Severe Asthma: The prevalence of severe asthma was 3.9%, with higher rates in older age groups and males (p<0.001).
- Passive Smoking: A significant relationship was found between asthma and passive smoking in both age groups (p<0.001).
Implications and Future Directions
The study's conclusion that the prevalence of asthma and severe asthma in the pediatric population of Iran is similar to other developing countries suggests shared challenges and potential solutions. Targeted attention to urban regions, male individuals, and older age groups is essential for better asthma control.
The researchers recommend that public health professionals develop suitable health endorsement programs, including asthma control education and limiting indoor cigarette smoking. These measures align with global best practices and could significantly reduce the burden of asthma in Iranian children.
Further national surveys are necessary to determine the trend of pediatric asthma in Iran and to evaluate the effectiveness of implemented interventions. Longitudinal studies could provide valuable insights into the long-term impact of asthma on children's health and development.