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.
Schematic representation of six alternative structural equation models of sleep quality and insomnia severity. IU = Intolerance of Uncertainty; AS = Anxiety Sensitivity; DEP = Depression; ANX = Anxiety; IS = Insomnia Severity; SQ = Sleep Quality.
