ERA | DAS28-CRP | Krenn score | Larsen score* | EO US combined | EO US Doppler | EO US GS | MRI synovitis | MRI erosion | MRI bone oedema |
DAS28CRP | – | r=0.34 p=0.09 | r=0.04 p=0.82 | r=−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 score | r=0.32 p=0.09 | – | r=0.00 p=1.00 | r=0.18 p=0.38 | r=0.10 p=0.72 | r=0.18 p=0.44 | r=0.14 p=0.65 | r=−0.10 p=0.80 | r=−0.48 p=0.24 |
Larsen X-ray score* | r=0.09 p=0.68 | r=0.13 p=0.19 | – | r=0.03 p=0.90 | r=−0.40 p=0.03 | r=0.03 p=0.90 | r=0.27 p=0.14 | r=−0.19 p=0.09 | r=−0.10 p=0.34 |
EO US combined score | r=0.12 p=0.34 | r=0.77 p<0.001 | r=0.23 p=0.21 | – | r=0.62 p=0.001 | r=1† p<0.001 | r=0.17 p=0.11 | r=0.26 p=0.01 | r=0.14 p=0.02 |
EO US Doppler score | r=0.08 p=0.66 | r=0.72 p<0.001 | r=0.14 p=0.17 | r=0.88 p<0.001 | – | r=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 score | r=0.19 p=0.24 | r=0.86 p<0.001 | r=0.29 p=0.08 | r=0.92 p<0.001 | r=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 score | r=0.23 p=0.25 | r=0.85 p<0.001 | r=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 score | r=0.10 p=0.36 | r=0.00 p=1.00 | r=−0.18 p=0.09 | r=−0.03 p=0.91 | r=0.11 p=0.60 | r=0.03 p=0.91 | r=0.08 p=0.60 | – | r=0.55 p=0.26 |
MRI bone oedema score | r=0.09 p=0.36 | r=0.13 p=0.43 | r=−0.15 p=0.17 | r=0.20 p=0.25 | r=0.27 p=0.07 | r=0.25 p=0.06 | r=0.12 p=0.49 | r=0.79 p=0.03 | – |
LRA | |||||||||
DAS28CRP | – | r=0.45 p=0.04 | r=0.32 p=0.16 | r=0.57 p=0.01 | r=0.62 p=0.002 | r=0.50 p=0.003 | NA | NA | NA |
Krenn score | r=−0.03 p=0.87 | – | r=0.20 p=0.53 | r=0.81 p<0.001 | r=0.63 p=0.002 | r=0.77 p<0.001 | NA | NA | NA |
Larsen X-ray score* | r=0.06 p=0.75 | r=0.42 p=0.08 | – | r=0.37 p=0.17 | r=0.56 p=0.01 | r=0.24 p=0.35 | NA | NA | NA |
EO US combined score | r=0.36 p=0.14 | r=0.83 p<0.001 | r=0.44 p=0.02 | – | r=0.72 p<0.001 | r=0.96 p<0.001 | NA | NA | NA |
EO US Doppler score | r=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 | NA | NA | NA |
EO US GS score | r=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 | – | NA | NA | NA |
RAMRRIS synovitis score | r=0.42 p=0.04 | r=0.61 p=0.002 | r=0.48 p=0.003 | r=0.72 p=0.002 | r=0.74 p<0.001 | r=0.58 p=0.004 | – | NA | NA |
MRI erosion score | r=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 score | r=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=0.07 | r=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.