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Published in: BMC Musculoskeletal Disorders 1/2014

Open Access 01-12-2014 | Research article

Psychometric properties of the pain stages of change questionnaire as evaluated by rasch analysis in patients with chronic musculoskeletal pain

Authors: Cecilie Røe, Elin Damsgård, Terese Fors, Audny Anke

Published in: BMC Musculoskeletal Disorders | Issue 1/2014

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Abstract

Background

Our objective was to evaluate the measurement properties of the Pain Stages of Change Questionnaire (PSOCQ) and its four subscales Precontemplation, Contemplation, Action and Maintenance.

Methods

A total of 231 patients, median age 42 years, with chronic musculoskeletal pain responded to the 30 items in PSOCQ. Thresholds for item scores, and unidimensionality and invariance of the PSOCQ and its four subscales were evaluated by Rasch analysis, partial credit model.

Results

The items had disordered threshold and needed to be rescored. The 30 items in the PSOCQ did not fit the Rasch model Chi- square item trait statistics. All subscales fitted the Rasch models. The associations to pain (11 point numeric rating scale), emotional distress (Hopkins symptom check list v 25) and self-efficacy (Arthritis Self-Efficacy Scale) were highest for the Precontemplation subscale.

Conclusion

The present analysis revealed that all four subscales in PSOCQ fitted the Rasch model. No common construct for all subscales were identified, but the Action and Maintenance subscales were closely related.
Appendix
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Metadata
Title
Psychometric properties of the pain stages of change questionnaire as evaluated by rasch analysis in patients with chronic musculoskeletal pain
Authors
Cecilie Røe
Elin Damsgård
Terese Fors
Audny Anke
Publication date
01-12-2014
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2014
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/1471-2474-15-95

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