TABLE 4

Pulmonary function in patients with chronic hypersensitivity pneumonitis

VO2 ≥84% predVO2 <84% predp-value
Subjects n1414
FVC L2.22±0.601.85±0.660.13
FVC % pred62 (58–70)45 (41–59)0.002
FEV1 L1.88±0.451.62±0.560.20
FEV1 % pred70±1353±140.003
FEV1/FVC0.86±0.060.89±0.040.14
FEV1/FVC % pred106 (105–113)108 (105–115)0.54
FEF25–75%101±2995±340.65
TLC L3.67 (3.00–4.17)2.92 (2.43–3.59)0.14
TLC % pred69 (62–77)55 (49–67)0.005
RV L1.33 (1.10–1.52)1.15 (0.98–1.38)0.25
RV % pred78 (69–91)76 (56–86)0.35
RV/TLC0.37±0.060.41±0.070.21
RV/TLC % pred131±29151±450.17
DLCO % pred50 (38–71)33 (26–45)0.01

Data are presented as mean±sd or median (25th–75th percentile), unless otherwise stated. V′O2: oxygen production; FVC: forced vital capacity; FEV1: forced expiratory volume in 1 s; FEF25–75%: forced expiratory flow at 25–75% of FVC; TLC: total lung capacity; RV: residual volume; DLCO: diffusing capacity of the lung for carbon monoxide.