Figure 1.
Distribution of average continuous positive airway pressure (CPAP; h/night) use at the (A) 1-month follow-up and (B) 24-month follow-up.
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.