Weighted kappa coefficients(κw) between histology reviewers D and E#
| Mean κw (95% CI) | |
| Total | 0.30 (0.12–0.48) |
| Thoracic HRCT: UIP | |
| Absent | 0.84 (0.55–1.14) |
| Present | 0.16 (-0.03–0.36) |
| FVC | |
| <60% pred | 0.33 (0.05–0.61) |
| >60% pred | 0.28 (0.06–0.50) |
CI: confidence interval; HRCT: high-resolution computed tomography; UIP: usual interstitial pneumonia; FVC: forced vital capacity; % pred: % predicted. #: each reviewer (D and E) scored the open lung biopsy or thoracoscopic lung biopsy specimens as unlikely, probable or very suggestive for the diagnosis of UIP.