Lung function testing
| Parameters | LIP | Subjects n |
| FEV1 % pred | 67.3±18.4 | 15 |
| FVC % pred | 65.0±15.0 | 15 |
| FEV1/FVC % | 80.3±5.0 | 15 |
| TLC % pred | 78.2±16.1 | 13 |
| Vtg % pred | 77.5±16.8 | 13 |
| RV % pred | 120.5±36.3 | 13 |
| Raw % pred | 135.1±56.8 | 13 |
| DL,CO % pred | 62.5±18.4 | 13 |
| DL,CO/VA % pred | 93.6±22.2 | 13 |
| PA–a,O2 | ||
| Resting mmHg | 17.2±8.6 | 12 |
| Peak exercise mmHg | 42.9±10.5 | 10 |
Data are presented as mean±sd, unless otherwise stated. LIP: lymphoid interstitial pneumonia; FEV1: forced expiratory volume in one second; % pred: per cent predicted; FVC: forced vital capacity; TLC: total lung capacity; Vtg: thoracic gas volume; RV: residual volume; Raw: airway resistance; DL,CO: diffusing capacity of the lung for carbon monoxide; VA: alveolar volume; PA–a,O2: alveolar–arterial oxygen tension difference. 1 mmHg = 0.133 kPa.