Insomnia Severity Index (ISI)
The Insomnia Severity Index (ISI) is a validated questionnaire designed to assess the severity of insomnia symptoms and how they affect your daily life. It evaluates common sleep concerns including difficulty falling asleep, difficulty staying asleep, waking too early, satisfaction with your sleep, and the impact of sleep problems on daytime functioning.
The ISI is widely used by healthcare providers and researchers to help identify insomnia symptoms and monitor changes over time. It is a screening tool and is not intended to diagnose a sleep disorder.
Instructions
Please answer each question based on your sleep experiences during the past two weeks.
- Select one answer for every question.
- Complete all questions before submitting.
- Your responses will be scored automatically.
- After submitting, you’ll receive an interpretation of your results and general recommendations.
Disclaimer: This questionnaire is intended for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.