title: The Pittsburgh Sleep Quality Index (PSQI).
authors.forename: C
authors.initials: C
authors.lastname: Smyth
mesh_terms: D015577:Geriatric Assessment; D006801:Humans; D009730:Nursing Assessment / Q000379:methods*; D010555:Personality Inventory; D011594:Psychometrics; D012890:Sleep; D012894:Sleep Stages; D012893:Sleep Wake Disorders / Q000175:diagnosis* / Q000451:nursing*