Fig. (1) The Epworth Sleepiness score is higher in some patients with sleep-related bruxism and nocturnal GERD. The mean and standard
deviation are shown for patients with (solid bar) and without (checkered bar) bruxism (A) and GERD (B). Subgroups by gender and ethnicity
are identified by color. *P < 0.05, **P < 0.01.