title: Use of the Late-Life Function and Disability Instrument for Measuring Physical Functioning in Patients With Heart Failure.
abstract: We evaluated the psychometric properties of the functioning component of the Late-Life Function and Disability Instrument (LLFDI) in individuals with heart failure (HF).
  
  
  
  Factor analyses were used (N = 151) to assess the dimensionality and structure of the basic and advanced lower extremity function subscales. Rasch model scores were compared to the raw means of the items.
  
  
  
  Rasch scores correlated with the raw means of the items at r = .96, indicating raw means are comparable to the more complicated Rasch analysis in estimating physical functioning using the basic and advanced subscales.
  
  
  
  The lower extremity physical functioning subscales of the LLFDI have potential as a clinical assessment tool to identify HF patients who are at high risk for functional limitations.
authors.affiliation: College of Nursing, University of Nebraska Medical Center, Omaha.
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Kupzyk
authors.forename: Yaewon
authors.initials: Y
authors.lastname: Seo
authors.forename: Bernice
authors.initials: B
authors.lastname: Yates
authors.forename: Bunny
authors.initials: B
authors.lastname: Pozehl
authors.forename: Joseph
authors.initials: J
authors.lastname: Norman
authors.forename: Brian
authors.initials: B
authors.lastname: Lowes
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D015577:Geriatric Assessment; D006299:Health Services for the Aged; D006333:Heart Failure / Q000451:nursing / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D018434:Sickness Impact Profile