Sleep Assessment Tools

Did you know...?

  • Ducks at risk of attack by predators are able to balance the need for sleep and survival, keeping one half of the brain awake while the other slips into sleep mode.
  • Some studies suggest women need up to an hour's extra sleep a night compared to men, and not getting it may be one reason women are much more susceptible to depression than men.
  • As a group, 18 to 24 year-olds deprived of sleep suffer more from impaired performance than older adults.
  • Experts say one of the most alluring sleep distractions is the 24-hour accessibility of the internet.
  • The extra-hour of sleep received when clocks are put back at the start of daylight in Canada has been found to coincide with a fall in the number of road accidents.
Main Sleep Evaluation Page

Epworth Sleepiness Scale

The Epworth Sleepiness Scale is widely used to determine how sleep affects your daily life by rating how likely you are to fall asleep in certain situations. For each scenario listed below, try and rate exactly how likely it is that you will fall asleep. In the case that you have not completed one of these activities lately, do your best to try and work out how they would have affected you. Use the scale below to choose the most appropriate number for each situation:

0 = no chance for dozing
1 = slight chance of dozing
2 = moderate chance of dozing
3 = high chance of dozing


 SituationChance of Dozing 
 Sitting and reading
 Watching TV
 Sitting inactive in a public place (e.g. a theater or a 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




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