Table 2

Pairwise correlation between DAS28CRP, Krenn score, EULAR-OMERACT US scores and RAMRIS MRI scores of the RCJ of the wrist. Baseline correlations (below the diagonal) and 6-month data (above the diagonal)

ERADAS28-CRPKrenn scoreLarsen score*EO US combinedEO US DopplerEO US GSMRI synovitisMRI erosionMRI bone oedema
DAS28CRPr=0.34 p=0.09r=0.04 p=0.82r=−0.14
p=0.57
r=−0.22
p=0.31
r=−0.15
p=0.51
r=0.10
p=0.72
r=−0.21
p=0.34
r=−0.24
p=0.33
Krenn scorer=0.32 p=0.09r=0.00
p=1.00
r=0.18 p=0.38r=0.10
p=0.72
r=0.18
p=0.44
r=0.14 p=0.65r=−0.10
p=0.80
r=−0.48 p=0.24
Larsen X-ray score*r=0.09 p=0.68r=0.13 p=0.19r=0.03 p=0.90r=−0.40
p=0.03
r=0.03
p=0.90
r=0.27 p=0.14r=−0.19
p=0.09
r=−0.10 p=0.34
EO US combined scorer=0.12
p=0.34
r=0.77 p<0.001r=0.23
p=0.21
r=0.62
p=0.001
r=1 p<0.001r=0.17 p=0.11r=0.26
p=0.01
r=0.14
p=0.02
EO US Doppler scorer=0.08 p=0.66r=0.72
p<0.001
r=0.14 p=0.17r=0.88 p<0.001r=0.62
p<0.001
r=0.41
p=0.02
r=0.40
p<0.001
r=0.32
p<0.001
EO US GS scorer=0.19
p=0.24
r=0.86
p<0.001
r=0.29
p=0.08
r=0.92 p<0.001r=0.77
p<0.001
r=0.27
p=0.14
r=0.26
p=0.01
r=0.14
p=0.02
MRI synovitis scorer=0.23 p=0.25r=0.85 p<0.001r=0.37
p=0.002
r=0.73
p<0.001
r=0.68
p<0.001
r=0.83
p<0.001
r=0.44
p=0.03
r=0.09
p=0.11
MRI erosion scorer=0.10 p=0.36r=0.00 p=1.00r=−0.18 p=0.09r=−0.03 p=0.91r=0.11 p=0.60r=0.03
p=0.91
r=0.08
p=0.60
r=0.55 p=0.26
MRI bone oedema scorer=0.09 p=0.36r=0.13 p=0.43r=−0.15 p=0.17r=0.20 p=0.25r=0.27 p=0.07r=0.25 p=0.06r=0.12 p=0.49r=0.79
p=0.03
LRA
DAS28CRPr=0.45 p=0.04r=0.32 p=0.16r=0.57
p=0.01
r=0.62
p=0.002
r=0.50
p=0.003
NANANA
Krenn scorer=−0.03 p=0.87r=0.20 p=0.53r=0.81
p<0.001
r=0.63
p=0.002
r=0.77
p<0.001
NANANA
Larsen X-ray score*r=0.06 p=0.75r=0.42 p=0.08r=0.37 p=0.17r=0.56
p=0.01
r=0.24 p=0.35NANANA
EO US combined scorer=0.36 p=0.14r=0.83 p<0.001r=0.44
p=0.02
r=0.72
p<0.001
r=0.96
p<0.001
NANANA
 EO US Doppler scorer=0.35
p=0.09
r=0.75
p<0.001
r=0.38
p=0.06
r=0.82
p<0.001
r=0.65
p<0.001
NANANA
 EO US GS scorer=0.35
p=0.13
r=0.79
p<0.001
r=0.16
p=0.51
r=0.93
p<0.001
r=0.73
p<0.001
NANANA
RAMRRIS synovitis scorer=0.42 p=0.04r=0.61 p=0.002r=0.48
p=0.003
r=0.72
p=0.002
r=0.74
p<0.001
r=0.58
p=0.004
NANA
MRI erosion scorer=0.42
p=0.10
r=0.27
p=0.13
r=0.59
p=0.004
r=0.51
p=0.008
r=0.53
p=0.008
r=0.31
p=0.13
r=0.55
p=0.004
NA
MRI bone oedema scorer=0.27
p=0.37
r=0.13
p=0.32
r=0.37
p=0.03
r=0.32
p=0.01
r=0.29
p=0.01
r=0.27
p=0.06
r=0.37 p=0.07r=0.75
p=0.01
  • Comparisonby unadjusted linear regression with robust cluster estimation. NA: Not available, as the LRA did not have 6-month MRI. Significant correlations in bold.

  • *Total Larsen wrist score (all quadrants); .

  • †The combined US scores are the same as the GS scores in the ERA 6-month visit group.

  • DAS28CRP, disease activity score in 28 joints with CRP level included; EO, EULAR-OMERACT; ERA, early rheumatoid arthritis; GS, grey scale; LRA, long-standing rheumatoid arthritis; RCJ, radiocarpal joint; US, ultrasound.