Table 3.

The Epworth sleepiness scale

Situation	Chance of Dozing
Sitting and reading
Watching television
Sitting inactive in a public place (eg, a theater or meeting)
As a passenger in a car for an hour without a break
Lying down to rest in the afternoon when circumstances permit
Sitting and talking to someone
Sitting quietly after a lunch without alcohol
In a car, while stopped for a few minutes in traffic

Responses are recorded on a 4-point scale of 0 to 3 (0, no; 1, light; 2, moderate; 3, high chance of dozing). A total score of greater than 9 merits further evaluation.

Adapted from Johns MW. A new method for measuring daytime sleepiness: the Epworth sleepiness scale. Sleep 1991;14:541; with permission.