Abstract Objective To investigate the prevalence of childhood asthma, and to find the distribution characteristics, precipitating factors, diagnosis and treatment status, and to provide scientific data for improving the prevention and management of asthma in children in Kunming City, China.Methods Children were selected by random cluster sampling. A standardized preliminary questionnaire was used for screening out possible patients in the survey. Diagnosis of asthma was confirmed by diagnostic criteria in suspected asthmatic children. Asthmatic children were further asked for past diagnosis and treatment with the questionnaire of asthma in children. Results The total asthma incidence rate was 1.40%. The prevalence of asthma in male and female children was 1.89% and 0.88% respectively（PConclusion The prevalence of asthma is associated with age and gender in children aged 0-14 years old in Kunming City. Acute asthma attack occurs mostly in winter and at midnight or dawn. Respiratory tract infection is the most common trigger of asthma exacerbation. Nearly a half of patients with asthma had not been diagnosed with asthma in the early stage. Most asthmatic children use antibiotics and only two-thirds use bronchodilators or inhaled corticosteroid in the treatment. The treatment and management of asthma in children awaits improvement as well.
Akinbami LJ, Moorman JE, Bailey C, et al.Trends in asthma prevalence, health care use, and mortality in the United States,2001-2010[J].NCHS Data Brief, 2012, 94(5): 1-8.
Oryszczyn MP, Bouzigon E, Maccario J, et al.Interrelationships of quantitative asthma-related phenotypes in the Epidemiological Study on the Genetics and Environment of Asthma, Bronchial Hyperresponsiveness, and Atopy[J].J Allergy Clin Immunol,2007, 119(1): 57-63.
[9]
Bottema RW, Reijmerink NE, Koppelman GH, et al.Phenotype definition, age, and gender in the genetics of asthma and atopy[J].Immunol Allergy Clin North Am, 2005, 25(4): 621-639.
[10]
Dijkstra A, Howard TD, Vonk JM, et al.Estrogen receptor 1 polymorphisms are associated with airway hyperresponsiveness and lung function decline, particularly in female subjects with asthma[J].J Allergy Clin Immunol, 2006, 117(3): 604-611.
