Agreement between independent radiologists’ readings of US in patients with CID.
| Variables | Total No. Scanned (Abnormal) | Scans Agreed, n (%) | Cohen κ (95% CI) |
|---|---|---|---|
| Joint effusion | 524 (19) | 517 (99) | 0.84 (0.72–0.96) |
| PD | 507 (13) | 466 (92) | 0.33 (0.10–0.55) |
| Synovial thickening | 528 (5) | 506 (96) | 0.29 (0.08–0.50) |
US: ultrasound; CID: clinically inactive disease; PD: power Doppler.