Table 3.

Overall intraobserver agreement and the intra- and interobserver reliability estimates for each of the elementary gout lesions.

US Gout Elementary LesionOverall Intraobserver Agreement, %Intraobserver Reliability, κ (95% CI)Interobserver Reliability, κ (95% CI)
Tophus870.727 (0.605–0.849)0.691 (0.589–0.771)
Aggregates840.611 (0.460–0.761)0.209 (0.039–0.368)
Erosions870.699 (0.566–0.832)0.737 (0.647–0.807)
Double contour760.526 (0.379–0.673)0.469 (0.323–0.593)
  • US: ultrasound.