Validity of the Katz Index to assess activities of daily living by informants in neuropathological studies

Revista da Escola de Enfermagem da USP

Renata Eloah De Lucena Ferretti-rebustini¹  Marcos Alencar Abaide Balbinotti¹  Wilson Jacob-filho¹  Flávio Rebustini¹  Claudia Kimie Suemoto¹  Carlos Augusto Gonçalves Pasqualucci¹  José Marcelo Farfel¹  Renata Elaine Paraizo Leite¹  Lea Tenenholz Grinberg¹  Ricardo Nitrini¹ 

关键词: Activities of Daily Living;    Aging;    Proxy;    Psychometrics;    Validation Studies;    Atividades Cotidianas;    Envelhecimento;    Procurador;    Psicometria;    Estudos de Validação;    Actividades Cotidianas;    Envejecimiento;    Apoderado;    Psicometría;    Estudios de Validation;   

DOI  :  10.1590/S0080-623420150000600010

来源: SciELO

【 摘 要 】

AbstractOBJECTIVE To analyze the evidences of construct validity of the Katz Index for the retrospective assessment of activities of daily living (ADL) by informants, to assist neuropathological studies in the elderly.METHOD A cross-sectional study analyzed the functional ability of ADL measure by the Katz Index, of 650 cases randomly selected from the Brazilian Brain Bank of the Ageing Brain Study Group (BBBABSG) database. Sample was divided in two subsamples for the analysis (N=325, each) and then stratified according to cognitive decline assessed by the Clinical Dementia Rating Scale (CDR). Factor analyses with calculations of internal consistency and invariance were performed.RESULTS Factor analysis evidenced a unidimensional instrument with optimal internal consistency, in all subgroups. Goodness of fit indices were obtained after two treatments of covariance, indicating adequacy of the scale for assessing ADL by informants. The scale is invariant to cognitive decline meaning that it can be used for subjects with or without cognitive impairment.CONCLUSION Katz Index is valid for the retrospective assessment of basic ADL by informants, with optimal reliability.

【 授权许可】

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