School of Phonoaudiology, Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina.
National Scientific and Technical Research Council, CONICET, INICSA, Córdoba, Argentina.
J Prev Med Public Health. 2020 Nov;53(6):429-438. doi: 10.3961/jpmph.20.229. Epub 2020 Oct 5.
Given that Argentinian public-sector workers are highly exposed to stressful conditions, and that the psychometric properties of the widely used Perceived Stress Scale (PSS) should be evaluated in different settings, this work aimed to compare the psychometric properties of the Latin American Spanish PSS-10 and PSS-4 and to identify the optimal scale for stress assessment.
A sample of 535 participants was randomly divided into 2 groups to evaluate dimensionality by exploratory and confirmatory factor analyses. The reliability of both scales was also evaluated. Convergent validity was estimated using the Executive Complaints Questionnaire, the average variance extracted, and the composite reliability. Discriminant validity was based on the correlation with the Utrecht Work Engagement Scale and the phi-square correlation between the components.
The factor analyses supported bidimensionality of the PSS-10 (stress and coping), which showed a better fit than the PSS-4. Moreover, the reliability of the PSS-10 was higher, whereas the PSS-4 did not achieve adequate values of internal consistency. The PSS-10 was also correlated significantly with all validation scales, and presented proper internal convergent and divergent validity.
The PSS-10 is a reliable and structurally valid instrument to measure perceived stress and coping in a Latin American Spanish-speaking population with high work demands, and the findings of this study expand our knowledge on the geographical and sociocultural applicability of the PSS.
鉴于阿根廷公共部门的工作人员高度暴露于压力环境中，并且广泛使用的感知压力量表（PSS）的心理计量学特性应在不同环境中进行评估，因此本研究旨在比较拉丁美洲西班牙语 PSS-10 和 PSS-4 的心理计量学特性，并确定用于压力评估的最佳量表。
随机将 535 名参与者分为两组，通过探索性和验证性因子分析评估维度。还评估了两种量表的可靠性。通过执行抱怨问卷、平均方差提取和综合可靠性来评估收敛有效性。基于与乌得勒支工作投入量表的相关性和成分之间的 phi 平方相关性来评估判别有效性。
因子分析支持 PSS-10（压力和应对）的二维性，其拟合度优于 PSS-4。此外，PSS-10 的可靠性更高，而 PSS-4 则没有达到足够的内部一致性。PSS-10 与所有验证量表显著相关，并且具有适当的内部收敛和发散有效性。
PSS-10 是一种可靠且结构有效的工具，可用于测量拉丁美洲西班牙语人群在高工作需求下的感知压力和应对能力，本研究的结果扩展了我们对 PSS 在地理和社会文化适用性方面的了解。
