Percent Predicted Forced Expiratory Volume in 1 Second Divided by Forced Vital Capacity

**Semantic type:** Quantitative Concept

**Definition:** The proportion of total forced vital capacity that is expelled during the first second of a forced exhalation as a proportion of the predicted normal value. (CDISC)

**Synonyms:** - FEV1FVCP - Percent Predicted FEV1/FVC - Percent Predicted FEV1/FVC - Percent Predicted FEV1/FVC