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Validation of the subjective evaluation of frailty in elderly in São Paulo: SABE Study

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Author(s):
Daniella Pires Nunes
Total Authors: 1
Document type: Master's Dissertation
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Faculdade de Saúde Pública (FSP/CIR)
Defense date:
Examining board members:
Yeda Aparecida de Oliveira Duarte; Maria José D\'Elboux; Jair Licio Ferreira Santos
Advisor: Yeda Aparecida de Oliveira Duarte
Abstract

Introduction: The evaluation of frailty measures requires some measurable criteria. In our environment, it is known that the use of these measures on a large scale is not easily operationalized, due to logistical difficulties. Thus, we study the possibility of identifying the syndrome of frailty through subjective questions. Objective: To validate the subjective components for evaluation of frailty. Method: This study is part of the SABE Study - Health, Well-being and Ageing, held in São Paulo, Brazil. This is a cross sectional study of 433 elderly (age 75 years) in 2009. We adopted the phenotype of frailty proposed by Fried and colleagues as a gold standard (measuring objectively 5 criteria: unintentional weight loss, fatigue reported, reduced grip strength, reduced walking speed and low physical activity). In this model, elderly with one or two components were considered frail, and those with three or more were considered frail. Subjective evaluation was performed using dichotomous questions for each component. We calculated the reliability, sensitivity, specificity and positive and negative predictive values for psychometric analysis of subjective evaluation. Results: The subjective evaluation is reliable and valid. For the pre-frail elderly the sensitivity was 89.7 per cent and specificity of 24.3 per cent , while for the frail, the sensitivity was 63.2 per cent and specificity of 71.6 per cent . When analyzing frailty process (pre-frail+frail) almost 90 per cent of the frail elderly were detected in the subjective assessment, 85.2 per cent were predicted positively and 32.7 per cent were predicted negatively. Conclusion: The subjective evaluation of frailty is a good tool to identify frailty process in elderly (AU)

FAPESP's process: 09/06910-3 - Development and validation of a subjective evaluation of the criteria for frailty in old age advanced
Grantee:Daniella Pires Nunes
Support Opportunities: Scholarships in Brazil - Master