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Structural analysis and reliability of the Perceived Stress Scale in nursing professionals from Peru
Sergio Dominguez-Lara1, César Merino-Soto2, Guadalupe Torres-Villalobos2
1Universidad Privada San Juan Bautista, Lima, Peru; Universidad San Martín de Porres, Lima, Peru.
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.
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