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Joint tenderness at 3 months follow-up better predicts long-term pain than baseline characteristics in early rheumatoid arthritis patients

Eberhard, Anna LU ; Bergman, Stefan LU ; Mandl, Thomas LU ; Olofsson, Tor LU ; Sharma, Ankita LU and Turesson, Carl LU (2023) In Rheumatology (Oxford, England)
Abstract

OBJECTIVE: To investigate pain course over time and to identify baseline and 3-month predictors of unacceptable pain with or without low inflammation in early RA.

METHODS: A cohort of 275 patients with early RA, recruited in 2012-2016, was investigated and followed for 2 years. Pain was assessed using a visual analogue scale (VAS; 0-100 mm). Unacceptable pain was defined as VAS pain >40, and low inflammation as CRP <10 mg/l. Baseline and 3-month predictors of unacceptable pain were evaluated using logistic regression analysis.

RESULTS: After 2 years, 32% of patients reported unacceptable pain. Among those, 81% had low inflammation. Unacceptable pain, and unacceptable pain with low inflammation, at 1 and 2 years was... (More)

OBJECTIVE: To investigate pain course over time and to identify baseline and 3-month predictors of unacceptable pain with or without low inflammation in early RA.

METHODS: A cohort of 275 patients with early RA, recruited in 2012-2016, was investigated and followed for 2 years. Pain was assessed using a visual analogue scale (VAS; 0-100 mm). Unacceptable pain was defined as VAS pain >40, and low inflammation as CRP <10 mg/l. Baseline and 3-month predictors of unacceptable pain were evaluated using logistic regression analysis.

RESULTS: After 2 years, 32% of patients reported unacceptable pain. Among those, 81% had low inflammation. Unacceptable pain, and unacceptable pain with low inflammation, at 1 and 2 years was significantly associated with several factors at 3 months, but not at baseline. Three-month predictors of these pain states at 1 and 2 years were higher scores for pain, patient global assessment, and the health assessment questionnaire, and more extensive joint tenderness compared with the number of swollen joints. No significant associations were found for objective inflammatory measures.

CONCLUSION: A substantial proportion of patients had unacceptable pain with low inflammation after 2 years. Three months after diagnosis seems to be a good time-point for assessing the risk of long-term pain. The associations between patient reported outcomes and pain, and the lack of association with objective inflammatory measures, supports the uncoupling between pain and inflammation in RA. Having many tender joints, but more limited synovitis, may be predictive of long-term pain despite low inflammation in early RA.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
in
Rheumatology (Oxford, England)
publisher
Oxford University Press
external identifiers
  • scopus:85186573992
  • pmid:37314957
ISSN
1462-0332
DOI
10.1093/rheumatology/kead278
language
English
LU publication?
yes
additional info
© The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology.
id
d4b9b71b-f33a-4302-8c88-934206bd8e9c
date added to LUP
2023-09-13 15:41:42
date last changed
2024-04-24 19:18:38
@article{d4b9b71b-f33a-4302-8c88-934206bd8e9c,
  abstract     = {{<p>OBJECTIVE: To investigate pain course over time and to identify baseline and 3-month predictors of unacceptable pain with or without low inflammation in early RA.</p><p>METHODS: A cohort of 275 patients with early RA, recruited in 2012-2016, was investigated and followed for 2 years. Pain was assessed using a visual analogue scale (VAS; 0-100 mm). Unacceptable pain was defined as VAS pain &gt;40, and low inflammation as CRP &lt;10 mg/l. Baseline and 3-month predictors of unacceptable pain were evaluated using logistic regression analysis.</p><p>RESULTS: After 2 years, 32% of patients reported unacceptable pain. Among those, 81% had low inflammation. Unacceptable pain, and unacceptable pain with low inflammation, at 1 and 2 years was significantly associated with several factors at 3 months, but not at baseline. Three-month predictors of these pain states at 1 and 2 years were higher scores for pain, patient global assessment, and the health assessment questionnaire, and more extensive joint tenderness compared with the number of swollen joints. No significant associations were found for objective inflammatory measures.</p><p>CONCLUSION: A substantial proportion of patients had unacceptable pain with low inflammation after 2 years. Three months after diagnosis seems to be a good time-point for assessing the risk of long-term pain. The associations between patient reported outcomes and pain, and the lack of association with objective inflammatory measures, supports the uncoupling between pain and inflammation in RA. Having many tender joints, but more limited synovitis, may be predictive of long-term pain despite low inflammation in early RA.</p>}},
  author       = {{Eberhard, Anna and Bergman, Stefan and Mandl, Thomas and Olofsson, Tor and Sharma, Ankita and Turesson, Carl}},
  issn         = {{1462-0332}},
  language     = {{eng}},
  month        = {{06}},
  publisher    = {{Oxford University Press}},
  series       = {{Rheumatology (Oxford, England)}},
  title        = {{Joint tenderness at 3 months follow-up better predicts long-term pain than baseline characteristics in early rheumatoid arthritis patients}},
  url          = {{http://dx.doi.org/10.1093/rheumatology/kead278}},
  doi          = {{10.1093/rheumatology/kead278}},
  year         = {{2023}},
}