ISI
Insomnia Severity Index
Instructions: For each question, please check the number that best describes your sleep pattern in the last 2 weeks.
For Question 1, use the following scale:
None (0) / Mild (1) / Moderate (2) / Severe (3) / Very Severe (4)
1. Please rate the current severity of your insomnia problem(s):
1A. Difficulty falling asleep
1B. Difficulty staying asleep
1C. Problems waking up too early
2. How satisfied/dissatisfied are you with your current sleep pattern?
Very Satisfied (0) / Satisfied (1) / Neutral (2) / Dissatisfied (3) / Very Dissatisfied (4)
3. To what extent do you consider your sleep problem to interfere with your daily functioning (e.g. daytime fatigue, mood, ability to function at work/daily chores, concentration, memory, etc.) currently?
Not at all interfering (0) / A little (1) / Somewhat (2) / Much (3) / Very much interfering (4)
4. How noticeable to others do you think your sleep problem is in terms of impairing the quality of your life?
Not at all noticeable (0) / Barely (1) / Somewhat (2) / Much (3) / Very much noticeable (4)
5. How worried/distressed are you about your current sleep problem?
Not at all worried (0) / A little (1) / Somewhat (2) / Much (3) / Very much worried (4)
How to Calculate Your Score
Add up the numbers from all 7 items. Your total score will be between 0 and 28.
What Your Score Means
0–7: No clinically significant insomnia.
8–14: Sub-threshold insomnia. (You might be struggling during the day due to sleep, but it may not be a full clinical disorder yet).
15–21: Clinical insomnia (moderate severity).
22–28: Clinical insomnia (severe).
Important: If you are scoring in the Clinical ranges, it is worth talking to a professional. Sleep hygiene is great, but sometimes there are deeper anxiety or physiological "loose threads" we need to tie up together. If you are in immediate distress or having thoughts of hurting yourself, please reach out for support. You are not alone, and help is available 24/7.
Call or Text: Dial 988 to reach the Suicide & Crisis Lifeline.
Crisis Text Line: Text HOME to 741741.
Emergency: Call 911 or go to your nearest emergency room.
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Credits & Citations
Source: Bastien CH, Vallières A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med. 2001. The ISI is available for clinical and educational use.
