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.
a Epworth Sleepiness Scale (ESS) vs age, total group (n = 39,448). Data are presented as mean (SD), p < 0.001. b Epworth Sleepiness Scale (ESS) vs age, grouped by gender. Data are presented as mean (SE). Male (n = 21,800), black line; female (n = 17,648), grey line. SE standard error (small error bars). *p < 0.05, ***p < 0.001
