Table 2.
Spearman’s correlation coefficients of four different datasets. Correlation of experts’ preference for JAMRIS-SIJ measurement item weights for MR image, JAMRIS-SIJ score vignettes and a combination of MR image and score vignettes. CAS—conjoint analysis survey IQR—interquartile range.
| Spearman Correlation Coefficient of CAS-Weighted JAMRIS-SIJ vs. Graded ± Image Vignette Ranking | |||||
|---|---|---|---|---|---|
| Vignette Type | Expert Cohort | Inflammation Domain | Damage Domain | ||
| Median | IQR | Median | IQR | ||
| Grade only | All experts (n = 17) | 0.84 | 0.80–0.94 | 0.93 | 0.90–0.96 |
| Rheumatologists (n = 6) | 0.89 | 0.82–0.97 | 0.92 | 0.88–0.95 | |
| Radiologists (n = 11) | 0.82 | 0.73–0.93 | 0.94 | 0.91–0.97 | |
| Grade + Image | Radiologists (n = 10) Rheumatologist (n = 2) |
0.74 | 0.55–0.85 | 0.93 | 0.81–0.95 |