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Table 1 Baseline characteristics of patients with idiopathic pulmonary fibrosis

From: Prognostic impact of the ratio of the main pulmonary artery to that of the aorta on chest computed tomography in patients with idiopathic pulmonary fibrosis

Clinical characteristics n = 303
Age, years 67.2 ± 9.5
Male sex 234 (77.2%)
BMI, kg/m2, median (IQR) 22.7 (20.1–24.9)
Ever-smoker 211 (69.6%)
Smoking, pack-years, median (IQR) 30.0 (20.0–42.0)
Underlying disease
 Hypertension 100 (33.0%)
 Diabetes mellitus 88 (29.0%)
 Pulmonary tuberculosis 43 (13.2%)
 Emphysema 39 (12.9%)
 Ischemic heart disease 29 (9.6%)
 Congestive heart failure 10 (3.3%)
GAP score, median (IQR) 3.0 (2.0–4.0)
6MWD, m, median (IQR) 400.0 (308.5–480.0) (N = 152)
Pulmonary function at diagnosis
 FVC, %, median (IQR) 74.0 (59.0–86.0)
 FEV1, %, median (IQR) 88.0 (71.0–100.0)
 FEV1/FVC, %, median (IQR) 83.0 (77.8–89.0)
 DLCO, % 69.0 (51.0–86.0)
Echocardiography
 Ejection fraction %, median (IQR) 66.0 (61.0–70.0) (N = 196)
 Right ventricular pressure, mmHg, median (IQR) 28.0 (28.0–47.0) (N = 163)
Chest CT
 mPA diameter, mm, median (IQR) 27.9 (26.1–30.5)
 Ascending Ao diameter, mm, median (IQR) 34.2 (31.6–36.7)
 mPA/Ao ratio, median (IQR) 0.83 (0.77–0.90)
  1. The data are presented as the number (percentage) unless otherwise indicated. 6MWD, 6-min walking distance
  2. Ao aorta, BMI body mass index, CT computed tomography, DLCO diffusing capacity of the lung for carbon dioxide, FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, IQR interquartile range, mPA main pulmonary artery