title: Reliability and Validity of the Brazilian Version of the Late-Life Function and Disability Instrument.
abstract: OBJECTIVE
  We evaluated the test-retest reliability, internal consistency, and construct validity of the Brazilian version of the Late-Life Function and Disability Instrument.
  
  
  METHODS
  A sample of 118 older adults provided data for testing construct validity and internal consistency, and 14 provided data for testing test-retest reliability. Factor analysis with varimax rotation was used to assess construct validity.
  
  
  RESULTS
  The Function component had excellent test-retest and total internal consistency reliability. Factor analysis revealed that the Upper Extremity Function and Advanced Lower Extremity Function domains were similar to the original analysis. The Disability component showed adequate to excellent test-retest reliability, except in the Management role; total internal consistency was excellent. Factor analysis revealed that its domains were similar to the original analysis, except for some items.
  
  
  CONCLUSIONS
  The Late-Life Function and Disability Instrument is recommended for assessment of Brazilian community-dwelling older adults who are functionally independent and who do not require mobility assistance.
authors.affiliation: Maria Helena Morgani de Almeida, PhD, is Full Professor, Occupational Therapy Course, Department of Physical Therapy, Speech Therapy and Occupational Therapy, Faculty of Medicine, University of São Paulo, São Paulo, Brazil; hmorgani@usp.br.
authors.forename: Maria Helena Morgani
authors.initials: MH
authors.lastname: de Almeida
authors.affiliation: Rosé Colom Toldrá, PhD, is Full Professor, Occupational Therapy Course, Department of Physical Therapy, Speech Therapy and Occupational Therapy, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.
authors.forename: Rosé Colom
authors.initials: RC
authors.lastname: Toldrá
authors.affiliation: Marina Picazzio Perez Batista, MS, is Occupational Therapist, Occupational Therapy Course, Department of Physical Therapy, Speech Therapy and Occupational Therapy, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.
authors.forename: Marina Picazzio Perez
authors.initials: MP
authors.lastname: Batista
authors.affiliation: Ana Cristina Fagundes Souto is Occupational Therapist, Occupational Therapy Course, Department of Physical Therapy, Speech Therapy and Occupational Therapy, Faculty of Medicine, University of São Paulo, São Paulo, Brazil.
authors.forename: Ana Cristina Fagundes
authors.initials: AC
authors.lastname: Souto