Propiedades Psicométricas del Addenbrooke's Cognitive Examination III: Estructura Factorial, Análisis TRI y Utilidad Diagnóstica para la detección de demencia en Atención Primaria de Salud
Propiedades Psicométricas del Addenbrooke's Cognitive Examination III: Estructura Factorial, Análisis TRI y Utilidad Diagnóstica para la detección de demencia en Atención Primaria de Salud
Authors
Véliz García, Óscar
Calderón Carvajal, Carlos
Beyle Sandoval, Christian
Calderón Carvajal, Carlos
Beyle Sandoval, Christian
Authors
Date
2020
Datos de publicación:
Revista médica de Chile, Vol. 148, N° 9, 1279-1288, 2020
Keywords
Psychometrics - Mental Status and Dementia Tests - Dementia - Demencia - Pruebas de estado mental y demencia - Psicometría
Collections
Abstract
Background: The Addenbrooke’s Cognitive Examination III (ACE-III) is widely used for evaluation of dementia. Aim: To assess the psychometric properties of ACE-III, analyzing its factor structure, its reliability (from an Item Response Theory [TRI] model) and its diagnostic usefulness. Material and
Methods: We studied 1101 older people without cognitive impairment and 63 currently having a diagnosis and receiving treatment for dementia. Results: The presence of two factors for the Attention subscale (Orientation and Attention, separately) was suggested. The factorial analysis showed adequate adjustment in all the subscales, except for the new Attention subscale. In the TRI analysis, the
Attention subscale presented a greater number of items with lack of fit compared to the other subscales. Using a proposed threshold of 66 points or less to identify cognitive impairment related to dementia, a sensitivity of 0.97 and specificity of 0.81 was obtained. Conclusions: ACE-III is a valid, reliable, and useful measure for the clinical detection of dementia. The combined use of Orientation and Memory subscales is proposed as an alternative and time-saving ACE-III indicator.
Description
Este estudio fue financiado por la Agencia Nacional de Investigación y Desarrollo, a través del Fondo
Nacional de Investigación en Salud, proyecto SA18I0014. Esta institución no tuvo influencia en
el diseño, recolección y análisis de los datos, ni tampoco en la preparación de este manuscrito.
Los autores declaran no tener conflicto de interés