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.
mMRC and CAT sized groups as defined by GOLD-recommended cut point (1,653 patients).
Abbreviations: CAT, Chronic Obstructive Pulmonary Disease (COPD) Assessment Test; GOLD, Global Initiative for Chronic Obstructive Lung Disease; mMRC, modified Medical Research Council dyspnea scale.
