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Meta-analysis of the psychometric properties of the Pain Catastrophizing Scale and associations with participant characteristics

Wheeler, Claire H.B.a,*; Williams, Amanda C de C.b; Morley, Stephen J.a

doi: 10.1097/j.pain.0000000000001494
Systematic Reviews and Meta-Analyses
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The aims of this study were to review the psychometric properties of the widely used Pain Catastrophizing Scale (PCS) using meta-analytic methods and to investigate the relationship between PCS scores and participant characteristics. A systematic search from 1995 found 229 experimental, quasi-experimental, and correlational studies that report PCS scores. Multivariate regression explored variables related to pain catastrophizing and participant demographics. Across studies, good internal reliability (α = 0.92, 95% confidence interval 0.91-0.93) and test–retest reliability scores (Spearman ρ = 0.88, 95% confidence interval 0.83-0.93) were found for PCS total scores but not for subscales. Pain Catastrophizing Scale scores were unrelated to age or sex, but strongly related to participants' pain type, highest in those with generalized pain. Language of the PCS also affected PCS scores, with further research necessary to determine linguistic, cultural, or methodological (eg, sampling strategy) influences. Study type influenced PCS scores with nonrandomized controlled trials reporting higher PCS scores than other study types, but results were confounded with pain diagnosis, as controlled trials were more likely than quasi-experimental studies to recruit clinical samples. The meta-analytic results provide insights into demographic influences on pain catastrophizing scores and highlight areas for further research. The advantages of systematic review and meta-analytic methods to achieve greater understanding and precision of psychometric properties—in this case, of the PCS—are applicable to other widely used outcome tools.

aProgramme in Clinical Psychology, Leeds Institute of Health Sciences, Leeds, United Kingdom

bResearch Department of Clinical, Educational & Health Psychology, University College London, London, United Kingdom

*Corresponding author. Address: Programme in Clinical Psychology, Leeds Institute of Health Sciences, Level 10, Worsley Building, Clarendon Way, Leeds, LS2 9NL, United Kingdom. E-mail address: Claire.wheeler@cantab.net (C.H.B. Wheeler).

Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.

S. J. Morley died in April 2017.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.painjournalonline.com).

© 2019 International Association for the Study of Pain
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