A study of the prevalence and risk factors of asthma in urban schools of Ludhiana, Punjab

Abstract

Background: Asthma is the most common chronic childhood disease being increasingly diagnosed in recent years. A review estimating the prevalence of bronchial asthma in the Indian children concluded the burden to be high than previously understood. There is paucity of data from Punjab, and no study from Ludhiana has estimated the true prevalence of asthma in urban area. Objective: To determine the prevalence and risk factors for childhood asthma using questionnaires and pulmonary function tests. Material and Methods: This was a questionnaire based cross-sectional study over a period of 1.5 year in the age group of 5-15 years studying in three schools of urban Ludhiana. The data were analyzed b STATA Software (version 16, college station Tx, USA). P Results: The retrieval of questionnaire I was possible in 80% of the 2500 distributed. The prevalence of asthma was calculated as 7.5% (95% confidence interval, 5.2-10.5). The mean age of the children with asthma was 8.67 ΁ 2.62 years. The most common symptoms reported by the cases were wheezing and seasonal allergy. No predilection for sex, socioeconomic status, and pet at home was noted. The family history of asthma and allergy, family history of smoking were emerged as significant risk factors. Conclusions: The prevalence of asthma in the urban schools of Ludhiana was found to be 7.5% which was much higher than previously reported. Age groups 5-8 years were commonly affected. Family history of asthma or allergy, and smoking history were found to be significant risk factors for development of asthma.