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Vol. 32. Issue 3.
Pages 152-160 (May - June 2022)
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Vol. 32. Issue 3.
Pages 152-160 (May - June 2022)
Original Article
Structural analysis and reliability of the Perceived Stress Scale in nursing professionals from Peru
Análisis estructural y de fiabilidad de la Escala de estrés percibido (PSS) en profesionales de enfermería del Perú
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Sergio Dominguez-Laraa,b,
Corresponding author
sdominguezmpcs@gmail.com

Corresponding author.
, César Merino-Sotob, Guadalupe Torres-Villalobosb
a Universidad Privada San Juan Bautista, Lima, Peru
b Universidad San Martín de Porres, Lima, Peru
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Tables (2)
Table 4. Factor parameters of the models evaluated: PSS-10.
Table 5. Factor parameters of the models evaluated: PSS-14.
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Abstract
Objective

The objective was to provide psychometric evidence of the 14-item and 10-item version of the Perceived Stress Scale in nursing professionals from Peru.

Method

Data on 2848 professionals (92.275% women) between 23 and 69 years old (M = 21.876; SD = 10.763) was extracted from ENSUSALUD 2015. An exploratory structural equation modelling (ESEM) was applied with Mplus 7.0 software to analyse several measurement models in the PSS: unidimensional, bidimensional, models with method factor, and bifactor. Finally, the reliability was analysed.

Results

The two-factor structure obtained adequate fit indices, and acceptable factorial loadings (>.50), while the unidimensional model has poor statistical support. The construct and score reliability was also adequate.

Conclusion

The two-factor model of the PSS-10 and PSS-14 presents adequate psychometric properties to expand its use to empirical research.

Keywords:
Stress
Perceived Stress Scale
Nursing
Factor analysis
Validity
Reliability
Resumen
Objetivo

El objetivo fue brindar evidencia psicométrica de las versiones de 10 y 14 ítems de la Escala de Estrés Percibido (PSS) en profesionales de enfermería del Perú.

Método

Se obtuvo información de 2848 profesionales (92.275% mujeres), con edades entre 23 y 69 años (M = 43.283; DE = 10.763) de la base de datos ENSUSALUD 2015. Se aplicó un modelamiento exploratorio de ecuaciones estructurales (ESEM) con el software Mplus v. 7.0 a fin de evaluar diversos modelos de medición en la PSS: unidimensional, bidimensional, modelos con factor de método, y bifactor. Finalmente, se analizó la fiabilidad.

Resultados

La estructura de dos factores obtuvo índices de ajuste adecuados en la versión de 14 ítems (PSS-14) y de 10 ítems (PSS-10), así como cargas factoriales aceptables (>.50), mientras que el modelo unidimensional no recibe apoyo estadístico. Adicionalmente, la fiabilidad del constructo y de las puntuaciones fue adecuada.

Conclusión

El modelo de dos factores de la PSS-10 y PSS-14 presenta propiedades psicométricas adecuadas que le permite ampliar su uso en investigación empírica.

Palabras clave:
Estrés
Escala de Estrés Percibido
Enfermería
Análisis factorial
Validez
Fiabilidad

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