Abstract
WHAT IS ALREADY KNOWN ABOUT THIS TOPIC? China has the world's most significant public health and economic burden of chronic respiratory disease. However, the association between preserved ratio impaired spirometry (PRISm) and mortality risk is unknown. WHAT IS ADDED BY THIS REPORT? The PRISm group exhibited a 37% higher risk of all-cause mortality than the normal group, and the risks of death from cardiovascular diseases, neoplasms, respiratory diseases, and infectious and parasitic diseases were also increased in PRISm. Moreover, the presence of respiratory symptoms or disease was associated with an increased risk of mortality in PRISm. WHAT ARE THE IMPLICATIONS FOR PUBLIC HEALTH PRACTICE? It is imperative to enhance public awareness of PRISm and to implement measures to facilitate the regression of PRISm toward normal lung function.