Characteristics of Lung Function and Prevalence of Airflow Obstruction Among Individuals Aged 18–74 Years — Beijing, China, 2017–2018

WHAT IS ALREADY KNOWN ABOUT THIS TOPIC? Airflow obstruction is the hallmark of many chronic respiratory diseases and may indicate the potential for the development of other progressive diseases. There are currently no representative studies of lung function in Beijing. An up-to-date estimation of the characteristics of lung function and airflow obstruction is thus needed. WHAT IS ADDED BY THIS REPORT? The estimated prevalence of airflow obstruction was 14.68% in Beijing, 2017–2018. The values of vital capacity, forced vital capacity, and forced expiratory volume in the first second were 3.09 L, 2.66 L, 2.22 L, respectively. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE? Effective public health strategy for lung in Beijing should target older people, current or former smokers, and individuals who live in urban environments, have a low education level, exhibit a high smoking index, and/or have an abnormal body mass index.