title: On the different scenarios of disagreement between self- and informant-reports on an aged adults ability to perform activities of daily living.
abstract: BACKGROUND
  Studies assessing physical functionality with questions on ability to perform activities of daily living (ADLs) commonly make use of self- and informant-report measures.
  
  
  OBJECTIVE
  Delineate the scenarios from which disagreement can arise and show evidence for the presence of disagreements when reporting on ADLs.
  
  
  METHODS
  Use information from a cross sectional study of community-dwelling minority aged adults and their informants to show how disagreement can arise in survey studies.
  
  
  RESULTS
  Although disagreement between self and informant reports on ADLs exist, informants should be considered a reliable source of information.
  
  
  CONCLUSIONS
  Informant reports should be used with caution when assessing complex and private ADLs.
authors.affiliation: Preventive Medicine and Community Health, University of Texas Medical Brach, Galveston, TX 77555, USA. Carlos.Siordia@utmb.edu
authors.forename: Carlos
authors.initials: C
authors.lastname: Siordia
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D015982:Bias; D003430:Cross-Sectional Studies; D015577:Geriatric Assessment; D006306:Health Surveys; D006801:Humans; D057566:Self Report