Table 1

Comparison of the sensitivity and specificity of classification criteria for spondyloarthritis “(data derived from Rudwaleit et al,2 12 Guignard et al,9 Schumacher and Bardin20)”

CriteriaSensitivity (%)Specificity (%)
ASAS axial SpA82.984.4
 Modified ESSG (with MRI)*85.165.1
 Modified Amor (with MRI)*82.977.5
ASAS peripheral SpA77.882.9
 Modified ESSG (with MRI)*62.581.1
 Modified Amor (with MRI)*39.897.8
ASAS combined criteria79.583.3
 Modified ESSG (with MRI)*79.168.8
 Modified Amor (with MRI)*67.586.7
  • * The ESSG criteria and the Amor criteria were modified in that active sacroiliitis on MRI was added.

  • ASAS, Assessment of SpondyloArthritis international Society; ESSG, European Spondylarthropathy Study Group; SpA, spondyloarthritis.