Factor structure of the General Health Questionnaire (GHQ-12): The role of wording effects

Ye, Shengquan

doi:10.1016/j.paid.2008.09.027

Cited by 91 publications

(151 citation statements)

References 46 publications

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“…Some support has recently been found [20] for this in a study comparing this unidimensional model with Graetz's three factor, as well as a twofactor model (the Andrich and van Schoubroeck model), where the unidimensional model proved to have marginally better fit compared to the other two models.…”

Section: Introductionmentioning

confidence: 59%

The factor structure of the GHQ-12: the interaction between item phrasing, variance and levels of distress

et al. 2012

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The GHQ-12 is a self-report instrument for measuring psychological morbidity.Previous work has suggested several multidimensional models for this instrument, although it has recently been proposed that these may be an artefact resulting from a response bias to negatively phrased items. The aim here was to explore the dimensionality of the GHQ-12.Methods: Cluster analysis, exploratory factor analysis and confirmatory factor analysis were applied to waves of data from the English Longitudinal Study of Ageing (ELSA wave 1 and 3), in order to evaluate fit and factorial invariance over time of the GHQ-12.Results: Two categories of respondents were identified: high and low scorers. Item variances were higher across all items for high scorers and higher for negatively-phrased items (for both high and low scorers). The unidimensional model accounting for variance observed with negative phrasing (Hankins, 2008) was identified as having the best model fit across the two time points.Conclusions: Item phrasing, item variance and levels of respondents distress affect the factor structure observed for the GHQ-12 and may perhaps explain why different factor structures of the instrument have been found in different populations.

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Section: Introductionmentioning

confidence: 59%

The factor structure of the GHQ-12: the interaction between item phrasing, variance and levels of distress

et al. 2012

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“…Se compararon los índices de ajuste del modelo original unidimensional, del bidimensional (p.ej., Campo-Arias, 2007Rocha, et al, 2011Villa, et al, 2013), del tridimensional (Graetz, 1991), y el unidimensional con efectos del método (Hankins, 2008), con el propósito de corroborar hallazgos recientes que cuestionan la multidimensionalidad del GHQ-12 (Abubakar & Fisher, 2011;Aguado, et al, 2012;Molina, et al, 2014;Smith, et al, 2013;Ye, 2009). La ausencia de una estructura factorial común a través de estudios dificulta la utilización del GHQ-12 como instrumento de tamizaje de la salud mental general y genera incertidumbre en la toma de decisiones en la práctica clínica.…”

Section: Discussionunclassified

“…ej., Hankins, 2008); para facilitar la comprensión a la numeración original de los ítems se les agregó una letra para indicar su redacción en forma positiva (P) o negativa (N). Los análisis de datos consistieron en analizar las varianzas de los ítems con intervalos de confianza (IC) de 95% con la intención de corroborar si los ítems negativos mostraban mayor varianza que los positivos; además, la obtención de la matriz de correlaciones Pearson de los ítems, incluyendo medias, desviaciones, asimetría y curtosis fueron incluidas para explorar la naturaleza de los tipos de respuesta ante ítems positivos versus negativos (Ye, 2009) dados los argumentos a favor de la unidimensionalidad del GHQ tanto como a favor de la multidimensionalidad. Los modelos evaluados se pueden dividir en tres tipos de acuerdo a varios autores (Aguado, et al, 2012): 1) el modelo unidimensional original y el modelo unidimensional con efectos del método (errores correlacionados para los ítems parafraseados en forma negativa; Hankins, 2008); 2) modelo bifactorial con factores correlacionados (p.…”

Section: Análisis De Datosunclassified

“…Ye (2009) encontró que las medias aritméticas de los ítems positivos era más altas que las de los negativos, y los ítems positivos presentaban asimetría y curtosis negativas y los ítems positivos lo contrario. Ye (2009) concluye que no se justifican factores correlacionados que, además, no proveen de una mejoría en el poder predictivo del GHQ-12 por lo que apoya la naturaleza unidimensional del cuestionario y sugiere aplicarlo tal cual es, pero utilizar solo los ítems positivos al calificarlo.…”

Section: Introductionunclassified

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Estructura factorial del cuestionario de salud general GHQ-12 en población general de México.

et al. 2016

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RESUMENOBJETIVO: conocer la estructura factorial del GHQ-12 en México y explorar su utilidad para identificar a personas que perciben tener problemas de salud. METODO: participaron 1093 adultos sin diagnóstico de enfermedades crónicas; 462 fueron varones, con una edad media de 32.2 años (DT=13.2) y 631 mujeres, con una edad media de 29.1 años (DT=12.0). Se realizaron comparaciones de correlaciones, medias y varianzas para explorar los efectos de la redacción de ítems en forma negativa versus positiva. Posterior al AFE, se compararon los índices de ajuste de los modelos multidimensionales, del unidimensional original y del unidimensional con 'efectos del método'. Se comparó la percepción general de salud y los puntajes del GHQ-12 para mujeres y hombres. RESULTADOS: el modelo unidimensional con 'efectos de método' (errores correlacionados) mostró el mejor ajuste a los datos. Los puntajes de ítems positivos, negativos y el total fueron más altos para participantes con problemas de salud, pero solo las varianzas e intervalos de confianza de los ítems positivos fueron consistentes y homogéneos. CONCLUSION: se apoya que el GHQ-12 es una medida unidimensional. Aplicado en población mexicana muestra una estructura factorial semejante a la de países orientales y occidentales. Se sugiere utilizar el puntaje de los ítems positivos del instrumento como un método general de tamizaje del bienestar/malestar psicológico.PALABRAS CLAVE: Análisis factorial confirmatorio, efectos de redacción, estructura factorial, GHQ-12, México. ABSTRACT OBJECTIVES: 1. To know the factor structure of the GHQ-12 in Mexican adult population. 2. To explore its usefulness to identify individuals who report health problems. METHOD: The study was carried out with a sample composed of 1093 adults without diagnosis of chronic diseases, divided into 462 males with an average age of 32.2 (DT = 13.2) and 631 females with an average age of 29.1 (DT = 12.0). In order to explore worded items effects positively and negatively, correlations, means, and variances were compared. Following the EFA, the adjustment of index of multidimensional models (the 'original' unidimensional model and the unidimensional with method effects) was compared. Also comparisons between self-reported health and GHQ-12 scores for both sexes were performed. RESULTS: The unidimensional model with 'method effects' obtained the best adjustment. Scores from positive, negative, and total items were higher for participants with self-reported health problems; however, only variances and confidence intervals with positive items were found homogeneous and consistent. CONCLUSION: GHQ-12 is confirmed as a unidimensional measure. Structural factor is similar to that of western and eastern countries when applied to Mexican population. Using the scores of GHQ-12 positive items as a screening method of psychological welfare/psychological is advised.

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“…Sua redação negativa o faz destoar dos demais, produzindo uma estrutura fatorial algo diferente da que seria obtida se todos os itens fossem positivos (Schriesheim & Eisenbach, 1996;Ye, 2009). Entretanto, não é possível descartar que o maior problema talvez seja a maior dificuldade que os respondentes têm em apreender o seu significado; é particularmente confuso negar algo (Não me sinto muito disposto) e depois expressar em termos do quanto é verdade, inclusive com uma alternativa nada verdadeiro, que pode sugerir mais uma negação, confundindo o respondente.…”

Section: Estrutura Fatorial E Consistência Interna Da Escalaunclassified

Escala de Vitalidade Subjetiva - EVS: evidências de sua adequação psicométrica

Gouveia

Milfont

Gouveia

et al. 2012

Psic.: Teor. e Pesq.

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Subjective Vitality Scale -SVS: Evidences of its Psychometric AdequacyABSTRACT -This paper presents empirical evidence of the psychometric adequacy of the Subjective Vitality Scale (SVS), based on three studies. In Study 1, 200 undergraduate students responded the SVS. The SVS showed a unidimensional factor structure (a = .73). In Study 2, another 200 undergraduate students answered the same instrument. A confirmatory factor analysis (CFA) confirmed the factor structure of Study 1, although item 2 was inadequate. Another CFA was realized without this item. Results were better than those considering all items (a = .75). Study 3 replicated these results with 200 elementary school teachers, and investigated the convergent validity of the SVS with satisfaction with life. It can be concluded that the SVS showed sufficient psychometric adequacy to support its use.

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Factor structure of the General Health Questionnaire (GHQ-12): The role of wording effects

Cited by 91 publications

References 46 publications

The factor structure of the GHQ-12: the interaction between item phrasing, variance and levels of distress

The factor structure of the GHQ-12: the interaction between item phrasing, variance and levels of distress

Estructura factorial del cuestionario de salud general GHQ-12 en población general de México.

Escala de Vitalidade Subjetiva - EVS: evidências de sua adequação psicométrica

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