Table 1 Characteristics of derivation cohort.
From: Predictors for bronchoalveolar lavage recovery failure in diffuse parenchymal lung disease
|  | n = 401 |
|---|---|
Age (years) | 69 (62–74) |
Men/women | 258 (64.3)/143 (35.7) |
Smoking, never/ex/current | 146 (36.4)/196 (48.9)/59 (14.7) |
Smoking (pack-years) | 18.4 (0–42) |
Pulmonary function | |
FVC (mL)/%FVC (%) | 2540 (1920–3060)/81.6 (69.6–94.6) |
FEV1.0 (mL)/%FEV1.0 (%) | 1970 (1520–2360)/80.7 (67.7–92.3) |
FEV1.0/FVC (%) | 80.7 (74.5–85.5) |
HRCT analysis | |
Lung volume of BAL side (mL) | 1850 (1450–2230) |
%LAA in the lung of BAL side (%) | 9.8 (4.6–18.1) |
BAL target site | |
Right superior lobe | 22 (5.5) |
Right middle lobe | 312 (77.8) |
Right inferior lobe | 5 (1.2) |
Left superior lobe other than lingula | 9 (2.2) |
Left lingula | 49 (12.2) |
Left inferior lobe | 4 (1.0) |
BALF recovery rate (%) | 48.7 (34.7–60.3) |
BALF recovery failure, no/ yes | 333 (83.0)/68 (17.0) |
Post-BAL diagnosis | |
IIP other than IPF | 93 (23.2) |
CTD-ILD | 70 (17.5) |
IPF | 44 (11.0) |
Sarcoidosis | 32 (8.0) |
Drug-induced pneumonitis | 21 (5.2) |
Cryptogenic organizing pneumonia | 18 (4.5) |
Hypersensitivity pneumonitis | 14 (3.5) |
Chronic eosinophilic pneumonia | 8 (2.0) |
Pleuroparenchymal fibroelastosis | 7 (1.7) |
Others | 94 (23.4) |
