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The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research.

Daniel J Buysse,C. Reynolds,2 Authors,D. Kupfer

1989 · DOI: 10.1016/0165-1781(89)90047-4
Psychiatry Research · 33,922 Citations

TLDR

The clinimetric and clinical properties of the PSQI suggest its utility both in psychiatric clinical practice and research activities.