What is the ESS-CHAD?
The Epworth Sleepiness Scale for Children and Adolescents (ESS-CHAD) is a validated questionnaire adapted from the adult Epworth Sleepiness Scale (ESS) originally developed by Dr. Murray Johns in 1991. The ESS-CHAD measures the general level of daytime sleepiness in children and adolescents by asking them to rate their likelihood of dozing off in eight common daily situations.
Unlike the adult ESS, the ESS-CHAD uses language and situations appropriate for younger populations. It is commonly used in pediatric sleep medicine to screen for excessive daytime sleepiness (EDS), which can be a symptom of underlying sleep disorders such as obstructive sleep apnea, narcolepsy, insufficient sleep syndrome, or circadian rhythm disorders.
The scale is self-reported by children aged approximately 10 and older, or proxy-reported by parents for younger children. It takes approximately 2–3 minutes to complete and produces a score from 0 to 24.
Scoring and Interpretation
Each of the eight questions is scored from 0 (would never doze) to 3 (high chance of dozing). The total score is the sum of all eight responses. Higher scores indicate greater subjective daytime sleepiness.
Score Categories
| Score Range | Category | Clinical Significance |
|---|---|---|
| 0–7 | Normal Daytime Sleepiness | Unlikely to have a significant sleep disorder. Normal alertness levels. |
| 8–9 | Average Daytime Sleepiness | Borderline; may reflect insufficient sleep or mild sleepiness. Monitor for changes. |
| 10–15 | Excessive Daytime Sleepiness | Suggests possible sleep disorder. Warrants further evaluation with sleep history, physical exam, and potentially polysomnography. |
| 16–24 | Severe Excessive Sleepiness | Strongly suggests significant sleep pathology. Urgent referral for comprehensive sleep evaluation recommended. |
Sleepiness Severity Scale
Pediatric Sleep Disorders
Excessive daytime sleepiness in children can be caused by a variety of sleep disorders. Common conditions include:
- Obstructive Sleep Apnea (OSA): Affects 1–5% of children, most commonly due to adenotonsillar hypertrophy. Symptoms include snoring, witnessed apneas, restless sleep, mouth breathing, and behavioral issues. Adenotonsillectomy is the first-line treatment.
- Insufficient Sleep Syndrome: The most common cause of EDS in adolescents. Teens require 8–10 hours of sleep but often get 6–7 hours due to early school start times, social media, and circadian phase delay.
- Narcolepsy: A rare but significant cause of EDS with onset typically in adolescence. Characterized by excessive sleepiness, cataplexy (sudden muscle weakness), sleep paralysis, and hypnagogic hallucinations. Requires polysomnography and MSLT for diagnosis.
- Delayed Sleep Phase Disorder: Common in adolescents who are natural "night owls." The circadian clock is shifted later, making it difficult to fall asleep at a conventional time and wake early for school.
- Restless Legs Syndrome / Periodic Limb Movement Disorder: Causes sleep disruption due to uncomfortable leg sensations and involuntary leg movements during sleep. Associated with iron deficiency.
Sleep Hygiene for Children
Good sleep hygiene is essential for all children, especially those with elevated ESS scores. Key recommendations from the American Academy of Sleep Medicine:
| Age Group | Recommended Sleep (hrs) | Key Hygiene Tips |
|---|---|---|
| 3–5 years | 10–13 hours (including naps) | Consistent bedtime routine, dark room, no screens 1 hour before bed |
| 6–12 years | 9–12 hours | Regular wake time, no caffeine, limit evening activities |
| 13–18 years | 8–10 hours | No screens in bedroom, consistent schedule on weekends, avoid late-night studying |
- Maintain a consistent sleep-wake schedule, even on weekends (within 1 hour)
- Create a cool, dark, and quiet sleep environment
- Remove all screens (phones, tablets, TVs, computers) from the bedroom
- Avoid caffeine after noon (including soda and energy drinks)
- Establish a calming 20–30 minute bedtime routine (reading, stretching, bathing)
- Encourage regular physical activity during the day but not within 2 hours of bedtime
- Avoid heavy meals close to bedtime
Worked Example
A 14-year-old reports the following scores:
A score of 12 falls in the Excessive Daytime Sleepiness category (10–15). This warrants further evaluation including a detailed sleep history, assessment of sleep duration, screening for snoring/apnea, and possibly a referral to a pediatric sleep specialist.
Frequently Asked Questions
What age is the ESS-CHAD appropriate for?
The ESS-CHAD is validated for children and adolescents aged 10–18 years for self-report. For younger children (approximately 5–9 years), a parent or caregiver can complete the questionnaire as a proxy. It is not validated for children under 5.
How is the ESS-CHAD different from the adult ESS?
The ESS-CHAD uses the same eight situations as the adult ESS but with modified language that is easier for children to understand. The scoring system (0–3 per item, total 0–24) is identical. Some versions include additional child-friendly context for each situation.
Can a normal ESS score rule out sleep disorders?
No. The ESS measures subjective daytime sleepiness, not the presence or absence of a specific sleep disorder. Some children with sleep apnea may not report excessive sleepiness because they have adapted to their chronically fragmented sleep. Clinical evaluation with polysomnography remains the gold standard for diagnosing conditions like OSA.
Should my child see a doctor based on this score?
If the score is 10 or higher, or if your child has symptoms such as loud snoring, witnessed pauses in breathing during sleep, difficulty waking in the morning, behavioral problems, or declining school performance, consult a pediatrician or pediatric sleep specialist. A score below 10 with persistent tiredness also warrants evaluation.