High-resolution computed tomography features of asbestosis versus fibrotic hypersensitivity pneumonitis: an observational study

Table 1 Comparisons of lung function values between asbestosis and FHP patients

Characteristics	Asbestosis	FHP	P value*
n	204	74
FVC (% predicted)	74.36 ± 20.44	85.99 ± 21.80	< 0.001
FEV1 (% predicted)	71.50 ± 21.19	83.30 ± 20.62	< 0.001
FEV1/FVC (%)	77.87 ± 9.75	80.49 ± 7.29	0.034
PEF (% predicted)	80.25 ± 25.88	99.97 ± 24.35	< 0.001
MEF75 (% predicted)	70.48 ± 33.26	86.23 ± 36.73	0.001
MEF50 (% predicted)	57.30 ± 27.31	72.60 ± 29.19	< 0.001
MEF25 (% predicted)	50.83 ± 26.34	64.90 ± 33.92	0.001
RV (% predicted)	91.18 ± 35.65	83.51 ± 27.11	0.136
TLC (% predicted)	78.80 ± 19.70	80.06 ± 18.17	0.629
RV/TLC (%)	47.91 ± 13.15	38.51 ± 9.78	< 0.001
DLCO SB (% predicted)	62.40 (39, 77.45)	53.20 (39.65, 69.25)	0.147
PaO₂, mmHg (room air, at rest)	81.93 ± 14.16	78.97 ± 16.47	0.153
CPI	37.16 (25.39, 37.16)	40.13 (28.47, 51.98)	0.864

Data was presented as mean ± SD or median (IQR
PFT pulmonary function test, FVC forced vital capacity, FEV1 forced expiratory volume in 1 s, PEF peak expiratory flow, MEF25 maximum expiratory flow in 25% vital capacity, MEF50 maximum expiratory flow in 50% vital capacity, MEF75 maximum expiratory flow in 75% vital capacity, RV residual volume, TLC total lung capacity, DLCO diffusing capacity of the lung for carbon monoxide, PaO₂ partial pressure of oxygen, CPI composite physiologic index, FHP fibrotic hypersensitivity pneumonitis
^*P value: Asbestosis versus FHP

ISSN: 1471-2466