Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ LAReferencia - Red F...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
versions View all 1 versions
addClaim

Análisis de la validez discriminante del Eating Attitudes Test mediante el modelo de Rasch (2015)

Authors: Salazar Mora, Zaida; Prado Calderón, Jorge Esteban;

Análisis de la validez discriminante del Eating Attitudes Test mediante el modelo de Rasch (2015)

Abstract

Se analiza la validez discriminante del Eating Attitudes Test (EAT-40) mediante la Teoría de Respuesta al Ítem y su modelo de un parámetro, conocido como modelo de Rasch. El EAT-40 (Garner & Garfinkel, 1979) consiste en un instrumento de detección temprana del riesgo de desarrollar trastornos de la conducta alimentaria (TCA), cuyas evidencias de validez en Costa Rica se repasan en este trabajo. Para este estudio se aplicó la versión española del instrumento (Castro, Toro, Salamero & Guimerá, 1991) a una muestra de 556 mujeres del área metropolitana de Costa Rica, con un edad promedio de 17.66 años (DE = 6.65). Para aumentar la variabilidad de las puntuaciones, la muestra estuvo compuesta por estudiantes de colegio (n = 391, 70.3%), de universidad (n = 120, 21.6%), de academias de ballet (n = 26, 4.7%) y pacientes hospitalizadas por bulimia nerviosa o anorexia nerviosa (n = 19, 3.4%). Mediante el modelo de Rasch, el análisis del mapeo de dificultad, y el análisis de las curvas características de los ítems y de la prueba completa, se obtuvo evidencia consistente de la capacidad de los ítems del EAT-40 para discriminar entre personas con y sin riesgo de TCA. En el apartado final se discuten los hallazgos y se abordan las limitaciones del tamaño de la muestra clínica.

We analyze the discriminant validity of the Eating Attitude Test (EAT-40) through the Item Response Theory and its one-parameter model, known as the Rasch model. The EAT-40 (Garner & Garfinkel, 1979) is an instrument for early detection of risk to develop eating disorders (ED), and its evidences of validity in Costa Rica are reviewed in this paper. For this study, the Spanish version of the instrument (Castro, Toro, Salamero & Guimerá, 1991) was applied to a sample of 556 women from the metropolitan area of Costa Rica, with an average age of 17.66 years (SD = 6.65). To increase the variability of the scores, the sample was composed of high school students (n = 391, 70.3%), university students (n = 120, 21.6%), ballet academy students (n = 26, 4.7%) and anorexia nervosa or bulimia nervosa hospitalized patients (n = 19, 3.4%). Through the Rasch model, the analysis of the item-person map, and the analysis of the characteristic curve of the items and the complete test, consistent evidence of the ability of the EAT-40 items to discriminate between people with and without the risk of ED was obtained. In the last section, the findings are discussed and the clinical sample size limitations are approached.

UCR::Vicerrectoría de Docencia::Ciencias Sociales::Facultad de Ciencias Sociales::Escuela de Psicología

Universidad de Costa Rica, Vicerrectoría de Investigación

Universidad de Costa Rica, Escuela de Psicología

Country
Costa Rica
Related Organizations
Keywords

mujeres, validez, enfermedades mentales, teoría de respuesta al ítem, Test de Actitudes ante la Alimentación, trastornos de la conducta alimentaria, anorexia nerviosa, juventud, modelo de Rasch, salud mental

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green