Epworth Sleepiness Scale.

ESS

What it measures

Trait daytime sleepiness - likelihood of dozing in 8 everyday situations

Length and format

8 items. 4-point likelihood-of-dozing (0-3); summed 0-24; >10 indicates excessive daytime sleepiness (self-report questionnaire)

Language versions

Dozens of languages worldwide; one of the most-translated sleep measures

Normative data

Normative data for this instrument is held in our reference library. The per-population breakdown is not published here.

Licence

copyrighted - author permission

This instrument is not self-serve. Obtaining it means going to the publisher or the author. We hold no direct link for it; the reference below is the citation to search from.

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Johns, M. W. (1991). A new method for measuring daytime sleepiness: The Epworth Sleepiness Scale. Sleep, 14(6), 540-545.