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• W2999387097 abstract "Background/Objective: The purpose of this study was to assess psychometric properties of the Brief Symptom Inventory (BSI-18), evaluate the measurement invariance with respect to sex, age, and tumor location, and to analyze associations between social support and sociodemographic and clinical variables among individuals with resected, non-advanced cancer. Method: A confirmatory factor analysis was conducted to explore the dimensionality of the scale and test invariance across sex, age, and tumor localization in a prospective, multicenter cohort of 877 patients who completed the BSI-18 and Multidimensional Scale of Perceived Social Support (MSPSS). Results: The results show that 3-factor and 1-factor measurement models provided a good fit to the data; however, a three-factor, second-order model was deemed more appropriate and parsimonious in this population. Alpha coefficients ranged between .75 and .88. Test of measurement invariance showed strong invariance results for sex, age, and tumor location; strong invariance over time was likewise assumed. Less perceived social support appears to correlate with all BSI factors. Conclusions: The study confirmed the tridimensional structure of the BSI-18 and invariance across age, sex, and tumor localization. We recommend using this instrument to measure anxiety, depression, and somatization in epidemiological research and clinical practice. Antecedentes/Objetivo: El propósito de este estudio fue evaluar las propiedades psicométricas del Brief Symptom Inventory (BSI-18), la invarianza con respecto al sexo, edad y localización del tumor, y analizar la asociación con el apoyo social y variables sociodemográficas y clínicas. Método: Se realizó un análisis factorial confirmatorio para explorar la dimensionalidad y se analizó la invarianza en función del sexo, edad y localización del tumor en una muestra prospectiva y multicéntrica de 877 pacientes que completaron el BSI-18 y la Multidimensional Scale of Perceived Social Support (MSPSS). Resultados: Tanto el modelo unifactorial como el trifactorial proporcionaron un buen ajuste a los datos; sin embargo, un modelo de segundo orden de tres factores se consideró más apropiado en esta población. Los coeficientes alfa oscilaron entre 0,75 y 0,88. Se halló una invarianza fuerte para sexo, edad y localización del tumor, y una fuerte invarianza en el tiempo. El apoyo social percibido se correlacionó negativamente con todos los factores BSI. Conclusiones: El estudio confirma la estructura tridimensional del BSI-18 y la invarianza en sexo, edad y localización del tumor. El instrumento puede recomendarse para evaluar la ansiedad, depresión y somatización en investigación epidemiológica y en la práctica clínica." @default.
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• W2999387097 date "2020-01-01" @default.
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• W2999387097 title "Factor structure and measurement invariance of the Brief Symptom Inventory (BSI-18) in cancer patients" @default.
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• W2999387097 doi "https://doi.org/10.1016/j.ijchp.2019.12.001" @default.
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