Psicothema was founded in Asturias (northern Spain) in 1989, and is published jointly by the Psychology Faculty of the University of Oviedo and the Psychological Association of the Principality of Asturias (Colegio Oficial de Psicólogos del Principado de Asturias).
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The factor structure of the Posttraumatic Growth Inventory in parents of critically ill children

Rocío Rodríguez-Rey1, Jesús Alonso-Tapia1, Nancy Kassam-Adams2 and Helena Garrido-Hernansaiz

1 Universidad Autónoma de Madrid and
2 Centre for Injury Research and Prevention. The Children’s Hospital of Philadelphia

Background: Posttraumatic growth (PTG) was conceptualized as consisting of changes in three broad dimensions; Self, interpersonal relationships, and philosophy of life. The aim of this study is to analyze the factor structure of the Posttraumatic Growth Inventory (PTGI) in a sample of parents whose children had survived a critical hospitalization in order to consider the structural validity of the PTGI scores for this population and to report our understanding of PTG as a construct. Methods: 143 parents completed the PTGI 6 months after their child’s discharge from pediatric intensive care. The PTGI scores’ factor structure was studied through confirmatory factor analyses (CFA) of different models supported in prior research, followed by an exploratory principal component analysis (PCA). Results: Prior models tested through CFA did not provide an acceptable fit for our data. Through exploratory PCA, three components emerged that explained 73.41% of the variance; personal growth, interpersonal growth and transpersonal growth. Subsequent CFAs on this three-factor model showed that a bifactor model had the best fit. Conclusion: Although the PTGI scores have shown slightly different factor structures among diverse populations, the three dimensions initially theorized appear to be robust, which supports the structural validity of its scores.

La estructura factorial del Inventario de Crecimiento Postraumático en padres de niños críticamente enfermos. Antecedentes: el crecimiento postraumático (CPT) se definió originalmente como la ocurrencia de cambios en tres dimensiones: personal, relaciones interpersonales y filosofía de vida. El objetivo de este estudio es analizar la estructura factorial de las puntuaciones del Inventario de Crecimiento Postraumático (PTGI) en una muestra de padres cuyos hijos sobrevivieron a una hospitalización en cuidados intensivos pediátricos para explorar la validez estructural en esta población e incrementar nuestra comprensión de este fenómeno. Método: 143 padres completaron el PTGI 6 meses después del alta de su hijo de cuidados intensivos. La estructura factorial de las puntuaciones en el PTGI se estudió mediante análisis factoriales confirmatorios (AFC) de los diferentes modelos que habían emergido en estudios previos, seguido de un análisis exploratorio de componentes principales (ACP). Resultados: los modelos previos no proporcionaron un ajuste aceptable a nuestros datos. Mediante ACP emergieron tres componentes que explicaron el 73,41% de la varianza; crecimiento personal, crecimiento interpersonal y crecimiento transpersonal. Posteriores AFCs de este último modelo mostraron que un modelo bifactor obtuvo el mejor ajuste. Conclusión: aunque las puntuaciones del PTGI haya mostrado estructuras factoriales distintas en diferentes poblaciones, las tres dimensiones originalmente teorizadas son consistentes, lo que apoya su validez estructural.


Impact factor 2021:   JCR (WOS): 3.890 (Q1)   |   SJR (Scopus) : 1.308 (Q1)    |  CiteScore 2020: 5,3