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.
Mean score in Study 1 for each of the seven components of the Pittsburgh Sleep Quality Index (PSQI), separately for the no-earworm, daytime-only-earworm, and sleep-related-earworm groups. Analyses were adjusted for gender. Error bars represent +1 SE. Asterisks indicate significant differences between groups (*p < .05, **p < .01, ***p < .001).
