Measurement Properties of the SF-MPQ-2 Neuropathic Qualities Subscale in Persons with CRPS: Validity, Responsiveness, and Rasch Analysis

Tara L Packham, Debbie Bean, Malcolm H Johnson, Joy C MacDermid, Sharon Grieve, Candida S McCabe, R Norman Harden
  • Pain Medicine, October 2018, Oxford University Press (OUP)
  • DOI: 10.1093/pm/pny202

Can we improve pain quality ratings for persons with complex regional pain syndrome?

What is it about?

We used a specific statistical method called Rasch analysis to examine the responses of persons with complex regional pain syndrome (CRPS) completing the Neuropathic Qualities Subscale of the Short Form McGill Pain Questionnaire (SF-MPQ-2). If the results of this kind of analysis show the scale meets specific criteria, then the scale is demonstrating strong measurement characteristics that give confidence to use the tool for research purposes. We were interested in this part of the SF-MPQ-2 because we are developing a core set of outcome measures for persons with CRPS, and are looking for the best and most concise way to evaluate pain qualities.

Why is it important?

Our results suggested this scale can be used for research if all of the questions are asked together, but some adjustments to the scoring key may be required.

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The following have contributed to this page: Tara Packham