Table III.
Relation of change in pain with change in synovial parameters
| Bivariate linear regression of change in [variable, below] with KOOS Pain subscale score∗ | b coefficient (95% CI) | P | r (95% CI) | |
|---|---|---|---|---|
| Synovial tissue volume (cm3) | V | −0.94 (−2.22 to 0.34) | 0.15 | −0.15 (−0.35 to 0.05) |
| Relative enhancement rate (min−1) | RER | −217.37 (−388.77 to −45.97) | 0.01 | −0.26 (−0.44 to −0.05) |
| Late relative enhancement | RElate | −5.08 (−8.83 to −1.32) | 0.01 | −0.27 (−0.45 to −0.07) |
| Maximal relative enhancement | REmax | −4.73 (−8.27 to −1.19) | 0.01 | −0.27 (−0.45 to −0.07) |
| Extravascular extracellular volume | ve | −9.96 (−29.89 to 9.98) | 0.32 | −0.10 (−0.30 to 0.10) |
| Volume transfer coefficient (min−1) | Ktrans | −151.18 (−299.73 to −2.63) | 0.05 | −0.21 (−0.39 to 0.00) |
∗
Each of the variables in the table was entered into a bivariate regression against KOOS pain subscale change at follow-up visit, and subsequently, a bivariate Pearson's correlation. Note that the KOOS pain score runs from 100 (no pain) to 0 (extreme pain) so that a negative r value would signify that a reduction in synovial volume would be correlated with a reduction in pain. Note that all coefficients are negative. ‘b coefficient’ = unstandardized regression coefficient. ‘r’ = Pearson's correlation coefficient.