0 of 7 answered

Over the last 2 weeks, how often have you been bothered by the following problems?

Question 1 of 7

Difficulty falling asleep

Question 2 of 7

Difficulty staying asleep

Question 3 of 7

Problems waking up too early

Question 4 of 7

How satisfied/dissatisfied are you with your current sleep pattern?

Question 5 of 7

How noticeable to others do you think your sleep problem is in terms of impairing the quality of your life?

Question 6 of 7

How worried/distressed are you about your current sleep problem?

Question 7 of 7

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, mood, etc.) currently?

About the ISI

The Insomnia Severity Index (ISI) is a brief, validated instrument that measures the perceived severity of insomnia. It evaluates difficulty falling asleep, staying asleep, early awakening, sleep satisfaction, interference with daily functioning, noticeability, and distress.

The ISI is widely used in sleep research and clinical practice. It is a recommended outcome measure by the American Academy of Sleep Medicine for evaluating insomnia treatment effectiveness.

Scoring

0–7 No Clinically Significant Insomnia
8–14 Subthreshold Insomnia
15–21 Moderate Clinical Insomnia
22–28 Severe Clinical Insomnia

Citation

Morin CM, Belleville G, Bélanger L, Ivers H. The Insomnia Severity Index: psychometric indicators to detect insomnia cases and evaluate treatment response. Sleep. 2011;34(5):601-608.

Frequently Asked Questions

What is the ISI?

The ISI (Insomnia Severity Index) is a 7-item validated instrument that measures the perceived severity of insomnia, including difficulty falling asleep, staying asleep, and the impact on daily life.

What is considered clinical insomnia?

A score of 15 or above on the ISI indicates moderate clinical insomnia. Scores of 22–28 indicate severe insomnia.

What is the best treatment for insomnia?

Cognitive Behavioral Therapy for Insomnia (CBT-I) is the first-line treatment recommended by the American Academy of Sleep Medicine. It is more effective long-term than medication.