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Excessive daytime sleepiness (EDS) is associated with significant personal and medical burden. However, there is little indication of the impact of these symptoms in the broader population.

We studied 946 men ages 24–92 years (median age, 59.4 [interquartile range {IQR}, 45–73 years]) and 1104 women ages 20–94 years (median age, 50 [IQR, 34–65 years]) who resided in the Barwon Statistical Division, South-Eastern Australia, and participated in the Geelong Osteoporosis Study (GOS) between the years of 2001 and 2008. EDS was defined as an Epworth Sleepiness Scale (ESS) score of ⩾10. Lifestyle factors, history of medical conditions, and medication history were documented by self-report.

For men, the age-specific prevalence of EDS was 5.1% (ages 20–29 years), 6.4% (ages 30–39 years), 9.8% (ages 40–49 years), 15.5% (ages 50–59 years), 12.0% (ages 60 …