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Table 4 Changes of BX parameters dependent on the existence of bone erosions

From: Psoriatic arthritis is associated with bone loss of the metacarpals

BX parameter Without erosions (n = 33) Erosions (n = 71) Difference
BHI mean (SD) 5.90 (0.49) 5.30 (0.60) −10.2 % (p < 0.01)
MCI mean (SD) 0.601 (0.059) 0.526 (0.063) −12.5 % (p < 0.01)
T-scoreMCI mean (SD) −0.324 (1.039) −1.722 (1.190) 1.398 (p < 0.01)
T mean (SD) 2.08 (0.28) 1.79 (0.31) −13.9 % (p < 0.01)
W mean (SD) 8.03 (0.95) 8.38 (1.09) 4.4 (p = NS)
  1. Data presented as mean (standard deviation)
  2. BHI Bone Health Index, BX BoneXpert, MCI Metacarpal Index, NS not significant, T cortical thickness of the metacarpal bone, W width of the metacarpal bone