Table 1 Baseline characteristics of patients in the major histopathological categories.
| NSIP | AIP | IPF | |
|---|---|---|---|
| Age at biopsy (years) | 50.8 (16.6) | 51.7 (14.9) | 65.3 (7.4) |
| Sex (F/M) | 12/10 | 13/12 | 20/35 |
| Dyspnoea | |||
| LOD | 5 (4) | 14 (5) | 10 (4) |
| Spirometry | |||
| FEV1 (% pr) | 58 (6) | 60 (3) | 81 (5) |
| FVC (% pr) | 54 (5) | 51 (3) | 71 (4) |
| FEV1/FVC | 104 (7) | 97 (81) | 80 (6) |
| TLC (% pr) | 63 (5) | 57 (8) | 79 (4) |
| RV (% pr) | 94 (17) | 64 (15) | 93 (11) |
| RV/TLC (% pr) | 155 (16) | 93 (23) | 40 (3) |
| TLCO (% pr) | 43 (14) | 46 (9) | 60 (7) |
| TLCO/VA (% pr) | 97 (2) | 83 (5) | 63 (7) |
| Pao2 (kPa) | 8.5 (0.8) | 10.4 (2.4) | 7.9 (0.3) |
| Paco2 (kPa) | 4.7 (0.1) | 6.5 (0.7) | 4.4 (1.1) |
| HRCT Score | |||
| Alveolar | 1.6 (1.1) | 1.6 (0.9) | 1.87 (0.9) |
| Interstitial | 0.87 (0.61) | 0.73 (0.52) | 1.9(0.56) |
| Total | 2.47 (0.85) | 2.33 (0.71) | 3.77 (0.73) |
| Total CS | 33 (20) | 42 (23) | 53 (16) |
AIP, acute interstitial pneumonia; CS, clinical score; F, female; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; HRCT, high‐resolution computed tomography; IPF, idiopathic pulmonary fibrosis; LOD, level of dyspnoea; M, male; NSIP, non‐specific interstitial pneumonia; Paco2, partial arterial pressure of carbon dioxide; Pao2, partial arterial pressure of oxygen; RV, residual volume; pr, predicted; TLC, total lung capacity; TLCO, carbon monoxide transfer factor; VA, alveolar volume.
Data are presented as means (SEM).