Diagnosis of idiopathic pulmonary fibrosis(IPF) in different subgroups
| IPF by HRCT | UIP by OLB/TLB | Definite diagnosis# | ||||
| Absent | Present | Absent | Present | Absent | Present | |
| Subjects n | 179 | 82 | 179 | |||
| Belgium | 2 (10.0) | 18 (90.0) | 1 (8.3) | 11 (91.7) | 2 (10.0) | 18 (90.0) |
| France | 4 (10.0) | 36 (90.0) | 4 (26.7) | 11 (73.3) | 6 (15.0) | 34 (85.0) |
| Germany | 3 (4.8) | 59 (95.2) | 5 (29.4) | 12 (70.6) | 8 (12.9) | 54 (87.1) |
| Italy | 1 (5.9) | 16 (94.1) | 1 (14.3) | 6 (85.7) | 1 (5.9) | 16 (94.1) |
| The Netherlands | 2 (10.5) | 17 (89.5) | 0 (0.0) | 19 (100.0) | 2 (10.5) | 17 (89.5) |
| Spain | 2 (9.5) | 19 (90.5) | 3 (25.0) | 9 (75.0) | 4 (19.0) | 17 (81.0) |
| Total | 14 (7.3) | 165 (92.7) | 14 (16.0) | 68 (84.0) | 23 (12.8) | 156 (87.2) |
Data are presented as n (%), unless otherwise indicated. HRCT: high-resolution computed tomography; UIP: usual interstitial pneumonia; OLB: open lung biopsy; TLB: thoracoscopic lung biopsy. #: defined as agreement of the histology and radiology committees with the diagnosis of IPF based on OLB/TLB and thoracic HRCT, or of the radiology committee when only HRCT scans were available.