Graded Chronic Pain Scale: Validation of 1-Month Reference Frame.
Journal
The Clinical journal of pain
ISSN: 1536-5409
Titre abrégé: Clin J Pain
Pays: United States
ID NLM: 8507389
Informations de publication
Date de publication:
22 11 2021
22 11 2021
Historique:
received:
04
05
2021
accepted:
02
11
2021
pubmed:
23
11
2021
medline:
3
2
2022
entrez:
22
11
2021
Statut:
epublish
Résumé
The 1-month Graded Chronic Pain Scale (GCPS) commonly used in clinical studies has never been validated. This study compares the GCPS 1-month with the 6 months version for reliability and validity. The Validation Project included 521 participants with at least one temporomandibular disorder for cross-sectional data and 74 participants for test-retest data. Internal reliability, stability, and construct validity were used for testing the 1-month version. Comparisons were made between the 2 versions for characteristic pain intensity (CPI), interference, and chronic pain grade (CPG). For GCPS 1-month, internal consistency for pain intensity and interference was high (Cronbach α=0.87 and 0.94, respectively), and temporal stability was high for CPI (intraclass correlation coefficient [ICC]=0.91), interference (ICC=0.85), and CPG (weighted κ=0.88). ICC or κ between the 2 versions was 0.78 (CPI), 0.66 (interference), and 0.69 (CPG); high-impact pain, in contrast, was 0.50. Construct validity exhibited higher correlations with predictor variables for 1-month version attributes of CPI, interference, and CPG. Modified Bland-Altman plots indicated that both versions measure CPI well. Overall, reliability of the 1-month GCPS is equal to or better than the 6-months version for pain intensity, disability days, pain interference, CPG, and high-impact pain. However, consistency between versions is lower for measures of disability days and interference, and for the derived measures of CPG and high-impact pain; highly skewed distributions and increasing disagreement in reported status over the time periods affect the measures of function. Therefore, we recommend that GCPS-1 month only be used to calculate pain intensity and pain interference.
Identifiants
pubmed: 34803153
doi: 10.1097/AJP.0000000000001005
pii: 00002508-202202000-00007
pmc: PMC8727576
mid: NIHMS1756347
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
119-131Subventions
Organisme : NIDCR NIH HHS
ID : U01 DE013331
Pays : United States
Informations de copyright
Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.
Déclaration de conflit d'intérêts
This research was funded by National Institutes of Health (NIH/NIDCR) [grant number U01-DE013331], Minneapolis, MN. The authors declare no conflict of interest.
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