Factor Structure Analysis of Perceived Stress Scale Among Healthcare Students
DOI:
https://doi.org/10.24265/Palavras-chave:
Stress, University Students, Test Validity, PsychometricsResumo
The study assessed the psychometric properties of the Perceived Stress Scale (PSS) in two random samples of 399 university students. An exploratory factor analysis was conducted using the WLSMV estimator with oblique rotation in the total sample (n=399) and separately for men (n=199) and women (n=200). Confirmatory factor analysis, using Structural Equation Modeling, indicated better adjustment parameters (RMSEA: 0.091; CFI: 0.977; SRMR: 0.032) for the two-factor solution (negative perception and stress coping) for both the total sample and sex. The scale items presented satisfactory factor loadings (>0.40), good internal consistency (α>0.80) and reliability (w>0.84) indices, and acceptable discriminant validity between the two factors (<0.85). Correlations between the two PSS-10 factors and psychological distress and resilience were of the expected magnitude and direction. The research strengthens the perspective of the bifactorial dimension of the PSS-10 and provides new evidence of its internal structure for use among young populations in Brazil.
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