Construct Validity of Radiographs of the Feet to Assess Joint Damage in Patients with Gout

Bart Spaetgens*, Caroline van Durme, Casper Webers, An Tran-Duy, Thea Schoonbrood, Annelies Boonen

*Corresponding author for this work

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Abstract

Objective. To investigate construct validity of radiographic damage of the feet in gout.
Methods. Radiographs of the feet were scored using the Sharp/van der Heijde method. Factors
associated with damage were investigated by a negative binomial model, and contribution of damage
to health by linear regressions.
Results. Age, disease duration, serum uric acid, and tophi were associated with being erosive and
erosion score. Tophi were associated with joint space narrowing. Erosions were associated (β 0.47,
95% CI 0.09–0.84) with physical function, but damage was not associated with overall physical health.
Conclusion. Our results support construct validity for radiographs of the feet when assessing
joint damage in gout. (First Release December 1 2016; J Rheumatol 2017;44:91–4; doi:10.3899/
jrheum.160737)
Original languageEnglish
Pages (from-to)91-94
Number of pages4
JournalJournal of Rheumatology
Volume44
Issue number1
DOIs
Publication statusPublished - Jan 2017

Keywords

  • GOUT
  • RADIOGRAPHIC DAMAGE
  • IMAGING
  • PATIENT-REPORTED OUTCOME
  • QUALITY OF LIFE

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