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Epworth Sleepiness Scale

The ESS measures a person’s general level of daytime sleepiness, or their average sleep propensity in daily life (ASP). It is a simple questionnaire based on retrospective reports of the likelihood of dozing off or falling asleep in a variety of different situations. The ESS is the most commonly used method for measuring a person’s ASP, used worldwide in many different languages.

The ESS should be used with a clear understanding of what it measures, and what its strengths and limitations are.


    How likely are you toddle off or fall asleep in the following situations in contrast to just feeling tired? Even if you have not done some of these things recently, try to workout how they would have affected you. Use the following scale to choose the most appropriate number for each situation.

    0 = Would never doze
    1 = Slight chance of dozing
    2 = Moderate chance of dozing
    3 = High chance of dozing
  • Situation
    Chance of dozing
    (e.g., a theatre or meeting)
  • Clear

Sleepiness Test