Name
airflow_limitation
Label
Airflow Limitation (pre FEV1/FVC<70 only)
Description
This variable is based on the empirical evidence from the spirometry that the ratio of FEV1 to FVC is below the level defined by the ATS as indicative of restricted airflow. Defined only for valid spirometries.
Domain
noyes01
- 0: No
- 1: Yes
Type
choices