PT  - JOURNAL ARTICLE
AU  - Bart Spaetgens
AU  - Caroline van Durme
AU  - Casper Webers
AU  - An Tran-Duy
AU  - Thea Schoonbrood
AU  - Annelies Boonen
TI  - Construct Validity of Radiographs of the Feet to Assess Joint Damage in Patients with Gout
AID  - 10.3899/jrheum.160737
DP  - 2017 Jan 01
TA  - The Journal of Rheumatology
PG  - 91--94
VI  - 44
IP  - 1
4099  - http://www.jrheum.org/content/44/1/91.short
4100  - http://www.jrheum.org/content/44/1/91.full
SO  - J Rheumatol2017 Jan 01; 44
AB  - 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.