Figure 3.
Correlation between change in CRQ-Mastery domain and average numbers of hours of use of noninvasive positive pressure ventilation.
Abbreviation: CRQ, Chronic Respiratory Disease Questionnaire.
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.