Name
postbd_prebd_diff_gt12_v2
Label
Post(FEV1%pred)-Pre(FEV1%pred)>=12% (pre FEV1/FVC<70 only)
Description
This variable is based on the ratio of the measured FEV1 difference from postbronchodilator and pre-bronchodilator exams over the Predicted FEV1 calculated prebronch (both values must be non-missing, and the post-bronchodilator spirometry examination must be valid) among participants with pre FEV1/FVC<70 only (ignores LLN comparison).
Type
numeric