Medical Diagnostics & Clinical Scoring

Epworth Sleepiness Scale (ESS)

Use the ESS questionnaire to measure daytime sleepiness and screen for sleep disorders like Obstructive Sleep Apnea (OSA) and narcolepsy.

Epworth Score
0
InterpretationNormal

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Clinical Overview: The Epworth Sleepiness Scale

The Epworth Sleepiness Scale (ESS) is a self-administered questionnaire used to determine the level of daytime sleepiness in an individual. It is widely used by sleep specialists to screen for Obstructive Sleep Apnea (OSA) and narcolepsy.

The Scenarios

The patient is asked to rate their likelihood of dozing off or falling asleep in 8 common daily situations, such as:

  • Sitting and reading.
  • Watching TV.
  • Sitting inactive in a public place (e.g., 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.

Scoring Interpretation

ESS Total = Σ(8 Scenarios, each 0-3)

Where:
Max Score=
24 Points
High Risk=
> 10 Points
  • 0-10: Normal range of sleepiness.
  • 11-15: Excessive daytime sleepiness.
  • 16-24: Severe daytime sleepiness.

Frequently Asked Questions

Not necessarily. It means you are excessively sleepy. While OSA is a common cause, other causes include insomnia, narcolepsy, or simply not getting enough sleep.

You should consult a physician to discuss a possible sleep study (polysomnography) to identify the underlying cause.

The standard ESS is validated for adults. There is a modified version (ESS-CHAD) specifically for children and adolescents.

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