Pittsburgh Sleep Quality Index.

PSQI

What it measures

Subjective sleep quality over the past month; 7 components - subjective quality, latency, duration, habitual efficiency, disturbances, sleep-medication use, daytime dysfunction

Length and format

19 self-rated (+5 bed-partner items, unscored). Mixed (frequency, times, Likert); 7 component scores 0-3, summed to a Global 0-21; >5 indicates poor sleep (self-report questionnaire)

Language versions

60+ languages; among the most-translated sleep instruments worldwide

Normative data

Normative data for this instrument is held in our reference library. The per-population breakdown is not published here.

Licence

copyrighted - author permission

This instrument is not self-serve. Obtaining it means going to the publisher or the author. We hold no direct link for it; the reference below is the citation to search from.

Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.

Reference

Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989). The Pittsburgh Sleep Quality Index. Psychiatry Research, 28(2), 193-213.