title: The Pittsburgh Sleep Quality Index (PSQI).
authors.forename: C
authors.initials: C
authors.lastname: Smyth
mesh_terms: D000368:Aged; D015577:Geriatric Assessment; D006801:Humans; D009730:Nursing Assessment / Q000379:methods* / Q000592:standards; D015203:Reproducibility of Results; D012890:Sleep; D012893:Sleep Wake Disorders / Q000175:diagnosis / Q000451:nursing*; D011795:Surveys and Questionnaires