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This is a personal website of Dr Murray Johns, dealing only with the Epworth Sleepiness Scale (ESS) which Dr Johns developed in 1990.
Dr Johns was the Founding Director of the Sleep Disorders Unit at Epworth Hospital, Melbourne, Australia. That is where the name of the ESS came from. The ESS was developed by Dr Johns for assessing the daytime sleepiness of patients in his private practice of Sleep Disorders Medicine at Epworth Sleep Centre in Melbourne. The ESS was first published in 1991(Murray W Johns. A new method for measuring daytime sleepiness: the Epworth Sleepiness Scale, Sleep, 1991;14 (6): 540-545).
Dr Johns owns the copyright to the ESS (© copyright, M.W.Johns, 1990-1997).
Dr Johns allows individual clinicians, researchers and not-for-profit organizations to use the ESS free of charge, so long as they acknowledge his copyright ownership of it wherever the ESS is reproduced.
However, Corporations and Governmental agencies are asked to pay a license fee for using the ESS. A form is attached for making application for such a license (see below).
This website describes the ESS and how it was developed and then validated. The ESS is available here as a pdf file, and there are instructions on how to use it in a standardized way.
Dr Johns has another personal website www.mwjohns.com which deals with all other aspects of his research and clinical practice in Sleep Disorders Medicine, and other topics on which he has published.
Dr Johns is also associated with a corporate website www.optalert.com dealing with Optalert technology for monitoring drowsiness continuously in active people, such as drivers of cars, trucks, trains, etc. Dr Johns is the Founding Director and Chief Scientist of Optalert Pty Ltd.
The Epworth Sleep Centre has its own website
www.epworthsleepcentre.com.au