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Table 3 Sensitivity and specificity for diagnosis of JSpA for global assessment of MRI and for the ASAS definition of a positive MRI of children compared to adults according to studies of Ayden et al. [13] and Weber et al. [24]

From: ASAS definition for sacroiliitis on MRI in SpA: applicable to children?

    Sensitivity Specificity LR + LR -
ADULTS Aydin et al. [13] Global 66% 94% 11 0.36
   ASAS 79% 89% 7.18 0.24
  Weber et al. [24] Global 51% 97% 17 0.51
   ASAS 67% 88% 5.58 0.38
CHILDREN This study Global 49% 89% 4.45 0.57
   ASAS 26% 97% 8.67 0.76
  1. (Global global assessment of MRI for sacroiliitis, ASAS assessment of MRI according to the ASAS definition of a positive MRI for sacroiliitis)