Abstract
Purpose
The aim of this study was to create an Italian version of the Pain Catastrophising Scale (PCS-I) and evaluate its psychometric properties in a sample with chronic low back pain.
Methods
The PCS was culturally adapted in accordance with international standards. The psychometric testing included factor analysis, reliability by internal consistency (Cronbach’s alpha) and test–retest repeatability (intraclass coefficient correlations), and concurrent validity by comparing the PCS-I with a numerical rating scale (NRS), the Tampa Scale of Kinesiophobia (TSK), the Roland Morris Disability Questionnaire (RMDQ), the Hospital Anxiety and Depression Scale (HADS) and the Positive Affect and Negative Affect Scale (PANAS) (Pearson’s correlation).
Results
It took 4 months to develop an agreed version of the PCS-I, which was satisfactorily administered to 180 subjects with chronic low back pain. Factor analysis revealed a three-factor 13-item solution (68% of explained variance). The questionnaire was internally consistent with one exception (α = 0.92 as a whole; 0.89 for Helplessness, 0.87 for Rumination and 0.56 for Magnification subscales) and showed a high degree of test–retest reliability (ICC = 0.842). Concurrent validity showed moderate correlations with the NRS (r = 0.44), TSK (r = 0.59), RMDQ (r = 0.45), HADS (Anxiety: r = 0.57; Depression r = 0.46) and PANAS (Negative Affect r = 0.54). The minimum detectable change was 10.45. The subscales were also psychometrically analysed.
Conclusion
The successfully translated Italian version of the PCS has good psychometric properties replicating those of other versions.
Abbreviations
- LBP:
-
Low back pain
- PCS:
-
Pain Catastrophising Scale
- PCS-I:
-
Pain Catastrophising Scale, Italian version
- ICC:
-
Intraclass coefficient correlation
- NRS:
-
Numerical rating scale
- TSK:
-
Tampa Scale of Kinesiophobia
- RMDQ:
-
Roland Morris Disability Questionnaire
- HADS:
-
Hospital Anxiety and Depression Scale
- PANAS:
-
Positive and Negative Affect Scale
- MDC:
-
Minimum detectable change
- SEM:
-
Standard error of the measurements
- SD:
-
Baseline standard deviation of the measurements
- R:
-
Test–retest reliability coefficient
- r:
-
Pearson’s correlation
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Acknowledgments
The authors would like to thank Francesca Bonetti, Teresa Coccia and Monia Rimondini for their assistance, and Kevin Smart for his help in preparing the English version of this paper.
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IRB approval. The Institutional Review Board approved the study, which was conducted in conformity with ethical and humane principles of research.
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Monticone, M., Baiardi, P., Ferrari, S. et al. Development of the Italian version of the Pain Catastrophising Scale (PCS-I): cross-cultural adaptation, factor analysis, reliability, validity and sensitivity to change. Qual Life Res 21, 1045–1050 (2012). https://doi.org/10.1007/s11136-011-0007-4
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DOI: https://doi.org/10.1007/s11136-011-0007-4