Renata Eloah de Lucena Ferretti-Rebustini1,2, Marcos Alencar Abaide Balbinotti2, Wilson Jacob-Filho3,4, Flávio Rebustini2,5, Claudia Kimie Suemoto3,4, Carlos Augusto Gonçalves Pasqualucci3,6, José Marcelo Farfel3,4, Renata Elaine Paraizo Leite3, Lea Tenenholz Grinberg3,7, Ricardo Nitrini3,8. 1. Universidade de São Paulo, Escola de Enfermagem, Departamento de Enfermagem Médico-Cirúrgia, São Paulo, SP, Brazil. 2. University of Quebec in Trois-Rivières, Department of Psychology, Laboratory of Psychometric and Experimental Methods, Trois-Rivière, QC, Canada. 3. Universidade de São Paulo, Faculdade de Medicina, Laboratório de Fisiopatologia no Envelhecimento, São Paulo, SP, Brazil. 4. Universidade de São Paulo, Faculdade de Medicina, Disciplina de Geriatria, São Paulo, SP, Brazil. 5. Universidade Estadual Paulista Júlio de Mesquita Filho, Instituto de Biociências, Laboratório de Estudos e Pesquisas em Psicologia do Esporte, Rio Claro, SP, Brazil. 6. Serviço de Verificação de Óbitos da Capital, São Paulo, SP, Brazil. 7. University of California, Department of Neurology, Memory and Aging Center, San Francisco, California, USA. 8. Universidade de São Paulo, Faculdade de Medicina, Departamento de Neurologia, São Paulo, SP, Brazil.
Abstract
OBJECTIVE: 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.
OBJECTIVE: 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.
Authors: Claudia K Suemoto; Renata E P Leite; Renata E L Ferretti-Rebustini; Roberta D Rodriguez; Ricardo Nitrini; Carlos A Pasqualucci; Wilson Jacob-Filho; Lea T Grinberg Journal: Brain Pathol Date: 2019-04-10 Impact factor: 6.508
Authors: Hélio José Coelho-Júnior; Bruno Bavaresco Gambassi; Maria-Claudia Irigoyen; Ivan de Oliveira Gonçalves; Paula de Lourdes Lauande Oliveira; Paulo Adriano Schwingel; Cândida Helena Lopes Alves; Ricardo Yukio Asano; Marco Carlos Uchida; Bruno Rodrigues Journal: J Aging Res Date: 2018-07-02
Authors: Yakup Kulu; Beat P Müller-Stich; Omid Ghamarnejad; Elias Khajeh; Georgios Polychronidis; Mohammad Golriz; Felix Nickel; Laura Benner; Philipp Knebel; Markus Diener; Christian Morath; Martin Zeier; Markus W Büchler; Arianeb Mehrabi Journal: Trials Date: 2018-07-13 Impact factor: 2.279
Authors: Iván José Fuentes-Abolafio; Brendon Stubbs; Luis Miguel Pérez-Belmonte; María Rosa Bernal-López; Ricardo Gómez-Huelgas; Antonio Cuesta-Vargas Journal: BMC Geriatr Date: 2020-08-10 Impact factor: 3.921