1. Dimensionality, reliability, and validity of the Finnish version of the pain catastrophizing scale in chronic low back pain.
- Author
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Mikkonen J, Leinonen V, Lähdeoja T, Holopainen R, Ekström K, Koho P, Airaksinen O, Luciano JV, Navarrete J, and Neblett R
- Subjects
- Humans, Female, Male, Finland, Reproducibility of Results, Middle Aged, Adult, Quality of Life psychology, Translations, Catastrophization psychology, Low Back Pain psychology, Chronic Pain psychology, Pain Measurement methods, Psychometrics standards
- Abstract
Objectives: The 13-item pain catastrophizing scale (PCS) is the most commonly used measure of pain catastrophizing. A validated Finnish version of the PCS has previously been unavailable. The objectives were to translate the original English version of the PCS into Finnish (PCS-FI), then to evaluate (i) structural validity of the PCS-FI with a confirmatory factor analysis (CFA), (ii) internal reliability with Cronbach's alpha, Omega, and Omega hierarchical, (iii) convergent validity with measures of well-being, quality of life, sleep quality, symptoms of central sensitization, and anxiety, and (iv) known-groups validity between participants with chronic low back pain (CLBP) and pain-free controls., Methods: The translation process was performed with established guidelines. The PCS-FI was psychometrically validated using 92 participants with CLBP and 53 pain-free controls., Results: Structural validity with CFA supported a bifactor solution. However, low reliability was found for the three specific factors ( ω
h ranging from 0.14 to 0.18) compared to the general factor ( ωh = 0.88) suggesting that only the total score should be used. Convergent validity analysis showed satisfactory correlations and medium effect sizes with the other patient-reported outcome measures. Participants with CLBP had significantly higher total PCS-FI scores than pain-free controls., Conclusions: The PCS-FI appears to be a valid and reliable instrument for assessing pain-related catastrophizing in Finnish-speaking populations. Ethical approval for this study was obtained from the Research Ethics Committee of the Northern Savo Hospital District, identification number 2131/2022, on the 31st of January 2022., (© 2024 the author(s), published by De Gruyter.)- Published
- 2024
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