Tara L. Packham
Measurement properties of the SF-MPQ-2 neuropathic qualities subscale in persons with CRPs: Validity, responsiveness, and Rasch analysis
Packham, Tara L.; Bean, Debbie; Johnson, Malcolm H.; MacDermid, Joy C.; Grieve, Sharon; McCabe, Candida S.; Norman Harden, R.
Authors
Debbie Bean
Malcolm H. Johnson
Joy C. MacDermid
Sharon Grieve
Candy McCabe Candy.Mccabe@uwe.ac.uk
Professor of Clinical Research and Practice
R. Norman Harden
Abstract
© 2018 American Academy of Pain Medicine. All rights reserved. Objectives. The purpose of this study was to conduct classical psychometric evaluation and Rasch analysis on the Neuropathic Qualities subscale of the Short-Form McGill Pain Questionnaire-2 utilizing scores from persons with complex regional pain syndrome to consider reliability and person separation, validity (including unidimensionality), and responsiveness in this population. Methods. Secondary analysis of longitudinal data from persons with acute complex regional pain syndrome was utilized for analysis of the psychometric properties and fit to the Rasch model of the Neuropathic Qualities subscale. We followed an iterative process of Rasch analysis to evaluate and address data fitting challenges. Results. Repeated measures from 59 persons meeting the Budapest criteria were used for analysis. Both item-total correlations and unidimensionality analyses supported theoretical construct validity; all convergent construct validity hypotheses were also supported. Responsiveness was demonstrated comparing baseline and one-year data at d ¼ 0.92, with a standardized response mean of 0.97. Data were able to fit the Rasch model, but all Neuropathic Qualities items had disordered thresholds that required rescoring. Additionally, local dependency and differential item function were addressed by “bundling,” suggesting that no further item reduction would be possible. Conclusions. This study provided preliminary support for the validity and responsiveness of the Neuropathic Qualities subscale in persons with complex regional pain syndrome. Rasch analysis further endorses use of the Neuropathic Qualities subscale as a “stand-alone” measure for neuropathic features, but with substantial background data transformations. Replication with larger samples is recommended to increase confidence in these findings.
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 3, 2018 |
Online Publication Date | Oct 20, 2018 |
Publication Date | Apr 1, 2019 |
Deposit Date | Nov 14, 2018 |
Publicly Available Date | Oct 21, 2019 |
Journal | Pain Medicine (United States) |
Print ISSN | 1526-2375 |
Electronic ISSN | 1526-4637 |
Publisher | Oxford University Press (OUP) |
Peer Reviewed | Peer Reviewed |
Volume | 20 |
Issue | 4 |
Pages | 799-809 |
DOI | https://doi.org/10.1093/pm/pny202 |
Keywords | complex regional pain syndrome, neuropathic pain qualities, Rasch analysis, outcome measurement |
Public URL | https://uwe-repository.worktribe.com/output/849582 |
Publisher URL | http://dx.doi.org/10.1093/pm/pny202 |
Related Public URLs | https://academic.oup.com/painmedicine |
Additional Information | Additional Information : This is a pre-copyedited, author-produced version of an article accepted for publication in Pain Medicine following peer review. The version of record [Packham, T., Bean, D., Johnson, M., MacDermid, J., Grieve, S., McCabe, C. and Harden, R. (2018) Measurement properties of the SF-MPQ-2 Neuropathic Qualities subscale in persons with CRPS: Validity, responsiveness and Rasch analysis. Pain Medicine. ISSN 1526-2375] is available online at: http://dx.doi.org/10.1093/pm/pny202. |
Contract Date | Nov 14, 2018 |
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