Insomnia Severity Index (ISI)
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
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Calculation
How severe is your difficulty falling asleep?
Consider your sleep over the last 2 weeks.
The result updates as you change the fields. Your data never leaves the browser.
This calculation is for reference only and is not medical advice, a diagnosis or a prescription. If you have a medical condition, are pregnant, take medication or have any doubts, discuss the result with a physician or a qualified nutrition professional.
How it is calculated
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
Formula
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
Limits of the method
Informational translation for self-assessment. Validation of this particular adaptation has not been confirmed. A score does not establish a diagnosis, and a low score does not rule out illness.
Sources of the method
- Morin CM et al. The Insomnia Severity Index: psychometric indicators to detect insomnia cases and evaluate treatment response. Sleep, 2011
- Bastien CH et al. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med, 2001
- PhenX Toolkit. Insomnia Severity Index: patient questionnaire, last two weeks, protocol 640801
How to use the calculation
Enter the starting values
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
Adjust the parameters
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
Read the result
Informational translation for self-assessment. Validation of this particular adaptation has not been confirmed. A score does not establish a diagnosis, and a low score does not rule out illness.
Frequently asked questions
What does the calculation show?
Sleep assessment over the last 2 weeks: 7 items with distinct 0–4 scales; total 0–28. Satisfaction, noticeability, worry and impact on daily life have their own responses.
What limitations apply?
Informational translation for self-assessment. Validation of this particular adaptation has not been confirmed. A score does not establish a diagnosis, and a low score does not rule out illness.
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