PSQI Pittsburgh Sleep Quality Index
Comprehensive sleep quality assessment across 7 dimensions
Purpose & Theoretical Basis
The Pittsburgh Sleep Quality Index (PSQI) was developed by Dr. Daniel J. Buysse and colleagues in 1989 and finalized in 1993. It is one of the most widely used sleep quality assessment tools worldwide.
Based on multidimensional sleep theory, the PSQI recognizes that sleep quality cannot be measured by duration alone. It assesses sleep across 7 dimensions: subjective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbances, sleep medication use, and daytime dysfunction.
Through 19 questions, you will receive a comprehensive sleep quality analysis, including dimension scores, sleep efficiency calculation, and personalized improvement recommendations. Suitable for adults aged 18 and above.
Test Content
Estimated Time: 5-8 minutes
Questions: 19 questions
The test includes time selection, frequency ratings, and subjective evaluation. Please answer based on your actual experience over the past month:
Time selection: bedtime, wake time, sleep latency
Frequency: Not during past month / < 1/week / 1-2/week / ≥ 3/week
Subjective: Very good / Fairly good / Fairly bad / Very bad
Author & Scale Source
Daniel J. Buysse, Charles F. Reynolds III, Timothy H. Monk, Susan R. Berman, David J. Kupfer
University of Pittsburgh School of Medicine / Psychiatry Research, 1989
The PSQI is one of the most widely used sleep quality assessment tools globally, translated into multiple languages. High reliability and validity have been demonstrated across diverse populations.
Suitable for self-assessment by adults aged 18 and above. Can be used as a routine sleep quality screening tool in clinical and community settings.
Result Interpretation
Your result will include a total score (0-21) across 7 dimensions:
7-dimension detailed analysis, Sleep efficiency percentage, Personalized recommendations, Guidance on when to seek professional help
Important Notice
Non-diagnostic tool: This is a sleep quality screening tool, not a diagnostic instrument. Results are for self-understanding and reference only. For reference only: Sleep problems can be caused by various factors. If sleep issues persist for more than 3 months, seek professional evaluation. Privacy: Your test data is processed securely. Results are stored only in your browser.
Emergency: If you are experiencing severe physical or psychological distress related to sleep, please call emergency services or visit the nearest emergency room.
Answer honestly based on your experience over the past month for the most accurate results
No account needed. Your answers stay on this device; results are aggregated anonymously to improve test quality.
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