What question did this study set out to answer?

Determine the extent to which repeated Perceived Stress Scale (PSS) scores reflect stable between-person differences versus fluctuating within-person changes over time.

April 21, 2023Prevención, trabajo y salud: Revista del Instituto Nacional de Seguridad e Higiene en el TrabajoOpen Access

The Perceived Stress Scale as a Measure of Stress: Decomposing Score Variance in Longitudinal Behavioral Medicine Studies

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Authors

KHKristie M. HarrisYale University AGAllison E. GaffeyCross-Cutting Cardiology JSJoseph E. SchwartzPreventive Cardiology

Discussion

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Implication

Longitudinal secondary analysis reveals that stable between-person differences account for half of Perceived Stress Scale variance, suggesting the tool captures enduring perception traits.

Key Points

Determine the extent to which repeated Perceived Stress Scale (PSS) scores reflect stable between-person differences versus fluctuating within-person changes over time.
Analyzed secondary data across up to 13 PSS assessments from an observational cohort of heart failure patients (N=127 followed over 39 months) and an experimental cohort of healthy young adults (N=73 followed over 12 months).
Applied multilevel linear mixed modeling to decompose total and subscale PSS score variance into between-person and within-person components across varying time intervals.
Between-person variance accounted for 42.3% of total PSS score variance in heart failure patients and 51.1% in healthy adults, with the remainder representing within-person fluctuations.
Restricting analysis to the initial 12-month window in both cohorts demonstrated comparable between-person variance proportions of 52.9% in heart failure patients and 51.1% in healthy adults.

Cite This Study

Harris et al. (2023) studied this question.

synapsesocial.com/papers/69d89c6405ee2ba81dbefe24 https://doi.org/10.1093/abm/kaad015

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Implication

Longitudinal secondary analysis reveals that stable between-person differences account for half of Perceived Stress Scale variance, suggesting the tool captures enduring perception traits.