This variable is based on the post-bronchodilator measurement of the FEV1. The airflow remains restricted after the administration of albuterol the person did not respond by greater than a 15% improvement over their first measurement. If PRBA29 is not missing and POBA29 is not missing and PRBA29 > 0 then.
- 0: less than or equal to 15% improvement
- 1: greater than 15% improvement
|less than or equal to 15% improvement||883||-|
|greater than 15% improvement||146||-|
|less than or equal to 15% improvement||420||463||883|
|greater than 15% improvement||81||65||146|