Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Participant flow. *The Asthma Control Questionnaire (ACQ) score was computed as the mean of the complete seven-item scores (ACQ7) or the six-item scores (ACQ6) if FEV1 was missing because spirometry was not performed or not usable per American Thoracic Society standards.
