Predictive value of RAMRIS synovitis for radiographic progression above the best cutoffs at baseline.
| Entire Population | RF-positive Patients | RF-negative Patients | |
|---|---|---|---|
| RAMRIS synovitis > 5 | OR 2.42 (1.24–4.72)* | OR 4.41 (1.72–11.35)* | OR 1.09 (0.40–2.80)* |
| Sensitivity: 0.64 | Sensitivity: 0.78 | Sensitivity: 0.43 | |
| Specificity: 0.60 | Specificity: 0.61 | Specificity: 0.58 | |
| PPV: 0.33 | PPV: 0.42 | PPV: 0.20 | |
| NPV: 0.84 | NPV: 0.88 | NPV: 0.80 | |
| RAMRIS synovitis > 6 | OR 2.55 (1.29–5.05)* | OR 3.90 (1.56–9.76)* | OR 1.39 (0.49–3.91)* |
| Sensitivity: 0.56 | Sensitivity: 0.67 | Sensitivity: 0.38 | |
| Specificity: 0.68 | Specificity: 0.70 | Specificity: 0.66 | |
| PPV: 0.35 | PPV: 0.45 | PPV: 0.22 | |
| NPV: 0.83 | NPV: 0.85 | NPV: 0.81 |
↵* Adjusted for cohort effect. RAMRIS: Rheumatoid Arthritis Magnetic Resonance Imaging Score; RF: rheumatoid factor; PPV: positive predictive value; NPV: negative predictive value.