Abstract
Introduction: Asthma is the most important chronic disease in children. The prevalence of this disease
was increased in Iran and right across the world. Asthma was considered as a complicated interaction
between the environmental stimulants and immunity responses. Numerous factors were recognized
as the asthma related-factors.
Objectives: The aim of the current study was to evaluate asthma related-factors in Tehran province
students.
Materials and Methods: The current research was designed as a descriptive-analytic study. The
sampling was carried out among the students whose ages ranged from 6 to 7 years old and 13 to 14
years old using the randomly systematic method in Tehran province. The necessary information was
collected using the standard ISAAC questionnaire to register the clinical symptoms of asthma. The
study data were analyzed using Stata 12 software.
Results: A total of 2122 students met inclusion criteria were enrolled in the current study. The mean
age and asthma history frequency were estimated as 12.7 ± 3.4 years and 5.8%, respectively. The
prevalence of asthma was calculated as 11.9%. The logistic regression analysis findings indicated a
statistically significant correlation between wheezing in relaxation position and post-physical activity
and nocturnal hacking in students with age, educational level, place of living and exposing to smoke
(P<0.05).
Conclusion: The findings showed that place of living and exposing to smoke are the most important
factors affecting asthma emerge especially in students older than 12 years of age. Paying attention to
the aforementioned factors could be proposed as an appropriate approach to prevent asthma.