The Epworth Sleepiness Scale (ESS) is a brief self-administered scale to quantify the risk of sleepiness in common situations. The ESS requires only 2-3 minutes to fill out, compared to sleep diaries or overnight sleep studies. This can be completed without any equipment, training or medical skills. It’s easy to use, making it popular in hospitals, sleep centers and general practice around the world.
What is the Epworth sleepiness scale used to measure?
The ESS is a measure of excessive daytime sleepiness (EDS). A disorder that is characterized by an inability to maintain normal waking patterns of sleep and consciousness.
This is a significant difference. The scale does not measure the level of fatigue from the muscle, the time asleep last night, boredom, mental fatigue or the quality of sleep while asleep.
But rather than that, it is your inclination to fall asleep in passive scenarios, such as after lunch or when watching TV. This type of sleepiness is strongly associated with the sleep regulatory disorders like sleep apnoea, narcolepsy and idiopathic hypersomnia.
The Epworth Sleepiness Scale provides a standardised and reproducible assessment of a patient’s sleep health in eight common daily situations, giving a clinician a snapshot of how the sleep health is impacting on a patient’s daily life.
How the Epworth Sleepiness Scale Questionnaire Works?
This questionnaire consists of 8 items from the Epworth Sleepiness Scale. You rate the probability of falling asleep for each of the ones presented. For each item there are four possible responses:
0 — Would never doze
1 — slight chance to nod off
2 — Some alertness, moderate chance of dozing
3 — High chance of dozing
The eight scenarios included in the Epworth Sleepiness Scale are:
- Sitting and reading
- Watching TV
- Sitting inactive in a public place (e.g. a theatre or meeting)
- As a passenger in the car for one hour without stopping.
- Breathing in the sun to relax at the end of the day
- Being seated and conversing with another person
- After lunch (no alcohol) quietly,
- When stopped in a car for a few minutes in traffic.
Your responses should be based on your normal day-to-day experience over the past few weeks and not just how you felt today. If you haven’t been in a specific situation in the past, guess what would occur in that situation. Only honest answers should be given.
The scenarios were specifically selected to provide a variety of stimuli. It is relaxed and low stimulation to lie down in the afternoon, so dozing is not so unusual. If you are sitting in a traffic jam, or conversing with someone, you will need to be engaged in the task at hand: if you are sleeping, it is a much stronger sign of an issue.
Epworth Sleepiness Scale Score: How It Is Calculated?
Scoring is simple. Add up all the numbers you picked. Each question carries a total of 3 points and the maximum possible score is:
Maximum score: 100 (performs very few drowsy job tasks)
Minimum score: 6 (low chance of dozing in all situations)
Simply add the eight numbers up! Your doctor uses the score on the Epworth Sleepiness Scale to see how severe your sleepiness is, and if more testing is necessary.
A quick example: If someone scores 1 + 2 + 1 + 3 + 3 + 0 + 2 + 2, their total is 14. This is within the moderate to severe sleepiness category and usually would result in a referral to a sleep specialist.
The score is based on your feelings in the last few weeks and may vary. CPAP therapy may lower the score on the Epworth Sleepiness Scale in a sleep apnoea patient. This is why this scale is a convenient continuous monitoring tool.
Scores of 10 or higher are clinically significant.
They indicate that sleepiness is more than just normal tiredness and that it is affecting your safety, work and lifestyle.
If its score is within the normal range: A score of less than 8 is encouraging. Scores should always be interpreted with consideration to symptoms and medical history. There are individuals suffering from sleep disorders who still achieve normal scores. If you are concerned, talk to your doctor.
A very high score: >16: strongly indicates that something is to be addressed. Lack of sleep can impair your driving ability and concentration at work at this stage. Your doctor will probably recommend a sleep study or overnight oximetry test.
Calculate the Epworth Sleepiness Scale using this calculator.
Medtree has a fun interactive Epworth Sleepiness Scale calculator. It’s an online version of the questionnaire that will automatically give you your score and interpretation. This app has the same functionality as the paper-based one. The tool asks you to answer the 8 questions and check in each case a value (between 0 and 3), and it immediately calculates your total and clarifies the meaning.
One advantage of an on-line health calculator is that it is not necessary to do arithmetic. You can easily and immediately interpret the results. Other advantages are that it can be easily taken over the years to monitor changes, is convenient before doctor visits and can be read on a cell phone.
Keep in mind that online calculators can be helpful screening tools, but cannot substitute for a medical consultation. If your score indicates moderate or severe sleepiness, consult a qualified health care provider for diagnosis, not self-diagnosis.
Epworth Sleepiness Scale – Australia
The link between Epworth Sleepiness Scale Australia is very old. The scale was built by Dr Murray Johns when he was working at Epworth Hospital in Melbourne and first published in 1991 in the journal Sleep. Australia continues to be a leader in sleep medicine research and the ESS is integrated into Australia’s healthcare system.
It is commonly used in general practice, primary care and by respiratory physicians who treat sleep-disordered breathing patients, sleep clinics and disorder centres, commercial vehicle licensing authorities and occupational health teams in industries where workers are at high risk of sleep problems such as mining and transport.
The road safety app is especially important in Australia. Fitness-to-drive assessments may include a driver’s ESS if they report excessive daytime sleepiness, particularly those of heavy vehicles. This is a good indication of the seriousness of the regulators in Australia to the real life problems of not addressing sleepiness.
The official printable version of the Epworth Sleepiness Scale (ES) is the Epworth Sleepiness Scale PDF Australia version distributed through hospital systems, sleep clinics and GP practices throughout the country. It continues to be a key resource within Australian sleep health pathways.
Epworth Sleepiness Scale Form & PDF
The original Epworth Sleepiness Scale form is a single page document that includes the 8 questions, the 4-point response scale and short instructions and instructions to interpret the score. It aims to be completed by the patient as a self-questionnaire before or during a clinical visit.
PDF is the most widely shared format of the Epworth scale. It is easy to print, standardised and can be scanned into patient records and is used by healthcare providers.
The Epworth Sleepiness Scale PDF download can be found via health care professionals and reputable medical and educational health websites.
An important point to make note of is that the Epworth Sleepiness Scale is a copyrighted instrument owned by Dr Murray Johns. Permission for free use is granted for educational purposes only (where this is personal, clinical or not for commercial purposes). Commercial reproduction requires a licence. Always get the form from a trusted clinical or academic institution.
Your doctor may provide a copy of the Epworth Sleepiness Scale PDF to complete if they wish, and use the last few weeks of your behaviour to fill it out. It’s a quick process and can affect the course of your consultation in a beneficial manner.
Why is the Epworth Sleepiness Scale important?
The ESS is more than a piece of paper. For clinicians it offers a validated and quantifiable measurement of something often very challenging for patients to describe: just how sleepy they are.
The sleep apnoea that affects those who have OSA. The most frequently used ESS is for this sleep disorder. People with OSA have repeated episodes of sleep apnoea while they are asleep, leading to poor sleep quality and daytime sleepiness. One of the initial clues that a sleep study is needed is an elevated ESS score. While the majority of cases are undiagnosed, OSA affects an estimated 1 billion people worldwide; and many cases remain undiagnosed for years because the very short awakenings occurring after each breathing pause are not remembered.
Narcolepsy
It is a disorder of the nervous system that results in irresistible and sudden sleep attacks. Narcoleptics often have an ESS score of 16 or higher.
Idiopathic hypersomnia
It includes excessive sleepiness for which no clear cause can be found. The ESS is helpful for documenting severity and tracking treatment response.
Monitoring treatment
Another important application. Once a patient begins using CPAP for OSA, his or her ESS will usually decrease dramatically within weeks, providing an objective measure to the patient and physician that treatment is effective.
Ensure worksite and road safety.Maintain worksite and road safety. The ESS is a part of fitness-to-drive guidelines and occupational health assessments in many countries. One of the factors that can lead to a fatal accident is a high score in a professional driver or heavy machinery operator, which can cause a mandatory medical review.
Frequently Asked Questions
The Epworth Sleepiness Scale is used to assess what?
It is used to determine someone’s sleepiness in normal circumstances. It can detect excessive daytime sleepiness to assist in diagnosing a sleep disorder, track treatment progress and inform fitness-to-drive decisions.
What is a normal score for the Epworth Sleepiness Scale?
A score between 0-7 is normal. The average score for the general population is 8-9. A score of 10 or higher should be considered clinically important and may be discussed with a health care provider.
What is the validity of Epworth Sleepiness Scale?
The scale has been well validated and is generally accepted as reliable. But, as with all self-report instruments, it requires honest responses. There are some people who under-report sleepiness. It is not used alone, but in conjunction with other clinical observations.
May I take the test online?
Yes, the Epworth Sleepiness Scale calculator on the MedTree can be used. You get 8 questions to answer, and an automatic score and interpretation. If your score is moderate or severe, consult a doctor.
Is it as a diagnostic tool for sleep apnoea?
No, it’s not a diagnostic test, it’s a screening test. The sleep study is the diagnostic tool; if this is the case and a person has high ESS, they are referred for a sleep study, which will be performed at a sleep center.
What does a high score mean?
If the score is 10-15, it means that the person has moderate to severe daytime sleepiness. A score from 16-24 means very sleepy. Both ranges suggest sleepiness which can impact daily safety and functioning and medical advice is recommended.
Are children able to fill in the Epworth Sleepiness Scale?
The standard ESS which was designed for adults was used by the researchers. There is a modified version of the Paediatric Daytime Sleepiness Scale (PDSS) for children. Speak with a paediatrician if you are concerned about a child’s sleepiness.
When will I be required to complete the questionnaire?
If your doctor is treating your sleep disorder, he or she will ask you to fill it out periodically to check your progress every couple of months. It is suitable for general monitoring once or twice a year or when your sleep pattern becomes markedly different.
Conclusion
The Epworth Sleepiness Scale is a simple tool that carries real clinical weight. In just eight questions, it captures something genuinely hard to measure: the daily burden of excessive sleepiness. Whether you are completing the Epworth Sleepiness Scalequestionnaire at a clinic, filling out the Epworth scale PDF at home, or using an online health calculator, the key is to answer honestly.
If your Epworth Sleepiness Scale score falls in the moderate or severe range, take it seriously. Excessive daytime sleepiness is not a character flaw; it is often a symptom of a treatable condition. With the right diagnosis and management, many people experience dramatic improvements in energy, focus, and quality of life.
