Dimensionality of stress experiences: Factorial structure of the Perceived Stress Questionnaire (PSQ) in a population-based Swedish sample
| Autor: | Michael Rönnlund, Lars-Göran Nilsson, Jan Bergdahl, Peter Vestergren, Maud Bergdahl, Andreas Stenling |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Sweden Factorial education.field_of_study Psychometrics Population Sample (statistics) General Medicine Population based Middle Aged Confirmatory factor analysis Arts and Humanities (miscellaneous) Surveys and Questionnaires Stress (linguistics) Developmental and Educational Psychology Humans Female Psychology education Stress Psychological General Psychology Aged Curse of dimensionality Clinical psychology |
| Zdroj: | Scandinavian Journal of Psychology. 56:592-598 |
| ISSN: | 0036-5564 |
| Popis: | We investigated the factorial structure of the Perceived Stress Questionnaire (PSQ-recent; Levenstein, Prantera, Varvo et al., 1993) in a large (N = 1516; 35-95 years) population-based Swedish sample (Nilsson, Adolfsson, Bäckman et al., 2004; Nilsson, Bäckman, Erngrund et al., 1997). Exploratory principal components analysis (PCA) was conducted on a first, randomly drawn subsample (n = 506). Next, the model based on the PCA was tested in a second sample (n = 505). Finally, a third sample (n = 505) was used to cross-validate the model. Five components were extracted in the PCA (eigenvalue1) and labeled "Demands," "Worries/Tension," "Lack of joy," "Conflict," and "Fatigue," respectively. Twenty-one out of the 30 original PSQ items were retained in a confirmatory factor analysis (CFA) model that included the five (first-order) factors and, additionally, a general (second-order) stress factor, not considered in prior models. The model showed reasonable goodness of fit [χ(2)(184) = 511.2, p0.001; CFI = 0.904; RMSEA = 0.059; and SRMR = 0.063]. Multigroup confirmatory factor analyses supported the validity of the established model. The results are discussed in relation to prior investigations of the factorial structure of the PSQ. |
| Databáze: | OpenAIRE |
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