Table 1.
Chest CT findings in patients with ANCA nephritis (n = 126) and concordance among three observers
| CT pattern | Observer 1 | Observer 2 | Observer 3 | After discussion |
|---|---|---|---|---|
| UIP or probable UIP | 20 | 31 | 30 | 31 |
| Indeterminate for UIP | 20 | 6 | 12 | 8 |
| Alternative diagnosis | 30 | 29 | 24 | 27 |
| No abnormal findings | 56 | 60 | 60 | 60 |
| Kappa coefficient | ||||
| Observers 1/2 | 0.792 | |||
| Observers 1/3 | 0.817 | |||
| Observers 2/3 | 0.975 | |||
Observers 1 and 2: specialists in thoracic radiology;
Observer 3: specialist in respiratory medicine
CT computed tomography, ANCA anti-neutrophil cytoplasmic antibody, UIP usual interstitial pneumonia