The Epworth Sleepiness Scale (ESS) is a standardized questionnaire used by clinicians to measure subjective daytime sleepiness and screen for disorders like Narcolepsy and Sleep Apnea.

How likely are you to doze off or fall asleep in the following situations, in contrast to feeling just tired?

0 = Would never doze | 1 = Slight chance | 2 = Moderate chance | 3 = High chance