Huang K, Yang T, Xu J, et al. – Researchers performed a national cross-sectional study involving over 57,000 adults aged ≥ 20 years to estimate the national prevalence of asthma in the Chinese population. Study participants were recruited using a multi-stage stratified sampling method with parameters derived from the 2010 census. Self-reported history of diagnosis by a physician or by wheezing symptoms in the prior 12 months defined asthma. All participants were assessed via standard asthma questionnaire, and were classified as having or not having airflow limitation through pulmonary function tests before and after the use of a bronchodilator. Risk factors for asthma were assessed through multivariable-adjusted analyses, which were done in all participants for whom data on the variables of interest were available, and disease management was assessed by self-reported history of physician diagnosis, treatments, and hospital visits in asthmatic individuals. Overall, asthma was found to be prevalent but primarily undiagnosed and undertreated in China. The investigators noted that it is important to increase the awareness of asthma, and disseminate standardized treatment in clinical settings to reduce the burden of disease.