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.
Cumulative response curves according to the evolution of dyspnea for the four health groups defined from the dyspnea Overall Treatment Effect questionnaire. ‘Worsened patients’, n = 30; ‘stable patients’, n = 185; ‘minimally improved’, n = 83; ‘improved’, n = 116.
Abbreviations: MID, minimal important difference = 3.5. and VSRQ is not
