Diagnostic procedures in patients with usual interstitial pneumonia (UIP) and nonspecific interstitial pneumonia (NSIP)
| Procedure | UIP | NSIP |
| Subject n | 53 | 7 |
| Open lung biopsy alone | 37 (70%) | 4 (57%) |
| Transbronchial biopsy alone | 3 (6%) | 1 (1.5%) |
| Open and transbronchial biopsies | 12 (23%) | 1 (1.5%) |
| Autopsy (additionally) | 8 (15%) | 2 (1.5%) |
| Autopsy alone | 1 (2%) | 1 (1.5%) |
Data are presented as n (%)