Predictive Value of Different Expressions of Forced Expiratory Volume in 1 Second (FEV1) for Adverse Outcomes in a Cohort of Adults Aged 80 and Older

In a cohort of adults aged 80 and older, FEV1 expressions that are independent of reference values (FEV1/Ht3 and FEV1Q) were better at predicting adverse health outcomes than traditional expressions that depend on reference values, and should be used in further research on FEV1 and aging.