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Table 2 Pearson correlations between Pro-C2 levels in axial spondyloarthritis and psoriatic arthritis and clinical parameters

From: Chondrocyte activity is increased in psoriatic arthritis and axial spondyloarthritis

  axSpA PsA
  Total (n = 110) Treatment-naïve (n = 34) Currently treated, total (n = 63) Previously treated (n = 13) Total (n = 101) Treatment-naïve (n = 13) Currently treated, total (n = 76) Previously treated (n = 12)
Age ns ns ns ns ns r = −0.55 ns ns
p = −0.051
BMI ns ns ns ns ns r = 0.60 ns ns
p = 0.032
Disease duration ns ns ns r = 0.54 ns r = 0.55 ns ns
p = 0.030 p = 0.052
ASDAS ns r = 0.45 ns ns ns ns ns ns
p = 0.008
HAQ ns ns r = 0.47 ns r = −0.34 ns r = −0.35 ns
p = 0.010 p = 0.004 p = 0.008
Sex ns ns ns ns ns ns ns ns
BASDAI ns ns ns ns ns ns ns ns
BASFI ns ns r = −0.30 ns ns ns ns ns
p = 0.008
SJC68 ns ns ns ns ns ns ns r = −0.92
p = 0.0001
TJC68 ns ns ns ns ns ns ns r = −0.89
p = 0.0003
  1. Abbreviations: ASDAS Ankylosing Spondylitis Disease Activity Score, axSpA axial spondyloarthritis, BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Functional Index, BASMI Bath Ankylosing Spondylitis Metrology Index, BMI body mass index, HAQ Health Assessment Questionnaire, ns not significant, SJC68 68 swollen joint count, TJC68 68 tender joint count