Single repair feature | First film is betterb (progression) (n = 143, 36%) | Second film is better (repair) (n = 254, 64%) | Odds ratio to detect repair | True positive rate (sensitivity) | False positive rate (1 – specificity) | Positive likelihood ratio | Negative likelihood ratio |
---|---|---|---|---|---|---|---|
Filling-in of erosions | 112 (33%)* | 225 (67%)** | 2.2 | 0.89 | 0.78 | 1.1 | 0.50 |
Cortication | 84 (30%) | 192 (70%) | 2.2 | 0.76 | 0.59 | 1.3 | 0.58 |
Sclerosis | 68 (31%) | 149 (69%) | 1.6 | 0.59 | 0.47 | 1.1 | 0.78 |
Remodelling | 32 (24%) | 97 (76%) | 2.1 | 0.38 | 0.22 | 1.7 | 0.79 |
Trabeculation | 41 (37%) | 78 (63%) | 1.1 | 0.20 | 0.21 | 1.0 | 1.0 |
Reconstitution of a normal joint | 41 (53%) | 37 (47%) | 0.43 | 0.15 | 0.29 | 0.5 | 1.2 |
Any of the above features of repair | 130 (36%) | 234 (64%) | 1.2 | 0.92 | 0.91 | 1.0 | 0.89 |