Functional Capacity Index in Elderly: Construction through the Item Response Theory - Open Access Library Journal

OALibJ > Vol.4 No.4, April 2017

Functional Capacity Index in Elderly: Construction through the Item Response Theory ()

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DOI: 10.4236/oalib.1103391 1,256 Downloads 2,202 Views

Author(s)

André Luiz Barbosa de Lima¹, Albert Espelt^2,3,4, Carme Viladich³, Montse Bartroli², Kenio Costa-Lima¹

Affiliation(s)

¹Post-Graduate Program in Collective Health, Federal University of Rio Grande do Norte, Natal, Brazil.
²Barcelona Public Health Agency, Barcelona, Spain.
³Department of Psychobiology and Methodology of Health Sciences, Faculty of Psychology, Autonomous University of Barcelona, Cerdanyola del Vàlles, Spain.
⁴Biomedical Research Networking Centres in Public Health and Epidemiology (CIBERESP), Madrid, Spain.

ABSTRACT

Background: The aim of the present study was to apply item response theory to measure the functional capacity index as an important measure of the component of positive aspects of functionality among elderly people, contributing to the expansion of the use of this tool by creating shorter and more precise scales for analysis of health situations. Methods: Cross-sectional study was performed, and sample consisted of 41,269 elderlies aged 60 or more from the 27 federal units that participated in the National Household Sample Survey, in 2008, in Brazil. The generalized partial credit model was used for the calibration of items. Results: The results of the analysis showed that the functional capacity index was sufficiently unidimensional for item response theory and, for greater reliability, the inclusion of more difficult items for elderly Brazilians with better functional capacity would be required. Conclusions: Finally, the present study argues that the functional capacity index can be used as a tool in the analysis and prioritization of health situations.

KEYWORDS

Measurements, Methods and Theories, Item Response Theory, Aged, Psychometrics, Activities of Daily Living

Share and Cite:

de Lima, A. , Espelt, A. , Viladich, C. , Bartroli, M. and Costa-Lima, K. (2017) Functional Capacity Index in Elderly: Construction through the Item Response Theory. Open Access Library Journal, 4, 1-11. doi: 10.4236/oalib.1103391.

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