Cited by 102Pain Management and TreatmentMusculoskeletal pain and rehabilitationMedical Practices and Rehabilitation

A prospective, multisite, international validation of the Complex Regional Pain Syndrome Severity Score

Open access
Harden, R. Norman, Maihofner, Christian, Abousaad, Elias, Vatine, Jean-Jacques, Kirsling, Amy, Perez, Roberto S.G.M., Kuroda, Maxine, Brunner, Florian +14 more·2017·Pain

Abstract

Clinical diagnosis of complex regional pain syndrome (CRPS) is a dichotomous (yes/no) categorization, a format necessary for clinical decision making. Such dichotomous diagnostic categories do not convey an individual's subtle gradations in the severity of the condition over time and have poor statistical power when used as an outcome measure in research. This prospective, international, multicenter study slightly modified and further evaluated the validity of the CRPS Severity Score (CSS), a continuous index of CRPS severity. Using a prospective design, medical evaluations were conducted in 156 patients with CRPS to compare changes over time in CSS scores between patients initiating a new treatment program and patients on stable treatment regimens. New vs stable categorizations were supported by greater changes in pain and function in the former. Results indicated that CSS values in the stable CRPS treatment group exhibited much less change over time relative to the new treatment group, with intraclass correlations nearly twice as large in the former. A calculated smallest real difference value revealed that a change in the CSS of ≥4.9 scale points would indicate real differences in CRPS symptomatology (with 95% confidence). Across groups, larger changes in CRPS features on the CSS over time were associated in the expected direction with greater changes in pain intensity, fatigue, social functioning, ability to engage in physical roles, and general well-being. The overall pattern of findings further supports the validity of the CSS as a measure of CRPS severity and suggests it may prove useful in clinical monitoring and outcomes research.

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Crossref · 10.1097/j.pain.0000000000000927

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Authors
Harden, R. N., Maihofner, C., Abousaad, E., Vatine, J.-J., Kirsling, A., Perez, R. S. G. M., Kuroda, M., Brunner, F., Stanton-Hicks, M., Marinus, J., van Hilten, J. J., Mackey, S., Birklein, F., Schlereth, T., Mailis-Gagnon, A., Graciosa, J., Connoly, S. B., Dayanim, D., Massey, M., Frank, H., Livshitz, A., & Bruehl, S.
Affiliations
  • Shirley Ryan AbilityLab (US)
  • University of Erlangen-Nuremberg, Erlangen, Germany
  • Tel Aviv University (IL)
  • Amsterdam UMC Location Vrije Universiteit Amsterdam (NL)
  • Balgrist University, Zurich, Switzerland
  • Cleveland Clinic (US)
  • Rehabilitation Institute of Chicago, Chicago, IL, USA
  • Stanford Medicine (US)
  • University Medical Center of the Johannes Gutenberg University Mainz (DE)
  • University Health Network, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
  • Vanderbilt University (US)
Corresponding author
Harden, R. Norman
Venue
Pain
Published
2017-04-25
Volume
158
Issue
8
Pages
1430-1436
ISSN
  • 0304-3959 (ISSN-L)
  • 1872-6623
OpenAlex
W2609289648
Cited by
102
References
34
Citations by year
2026: 8 · 2025: 12 · 2024: 9 · 2023: 17 · 2022: 14 · 2021: 11 · 2020: 11 · 2019: 12 · 2018: 7
FWCI
12.26
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Pain (publishedVersion)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
Reflex Sympathetic Dystrophy Syndrome Association
Topics
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
  • Health Sciences › Medicine › Pharmacology › Musculoskeletal pain and rehabilitation
  • Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Medical Practices and Rehabilitation
Keywords
complex regional pain syndrome, severity measurement, outcome measure validation, smallest real difference, intraclass correlation coefficient, pain intensity, fatigue, social functioning, physical function, well-being, treatment response monitoring
MeSH terms
Adult, Aged, Diagnosis, Differential, Female, Humans, Male, Middle Aged, Pain, Pain Measurement, Prospective Studies, Severity of Illness Index, Complex Regional Pain Syndromes

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