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Table 1 Characteristics of study population

From: Assessment of survival in patients with idiopathic pulmonary fibrosis using quantitative HRCT indexes

  Mean ± SD or n (%) Median (range interquartile)
age at diagnosis (years) 68.26 ± 6.34 68 (64, 73)
male 35 (83.33)  
female 7 (16.67)  
current/former smoker 33 (78.57)  
never smoker 9 (21.43)  
follow up time (days) 1037.33 ± 430.04 978 (683.84, 1362)
FVC%a 84.28 ± 16.33 83.5 (74, 95)
DLCO%b 60.73 ± 17.16 61.5 (49, 69)
GAP (points)c 3.19 ± 1.10 3 (3, 4)
deceased 10 (23.81)  
pirfenidone only 38 (90.48)  
pirfenidone switched to nintedanib 4 (9.52)  
kurtosis 1.27 ± 1.07 1.05 (0.5, 1.77)
skewness 1.28 ± 0.33 1.29 (1.12, 1.51)
Mean Lung Density − 770.77 ± 46.84 − 779.03 (− 795.90, − 755.98)
HAAd 15.31 ± 5.32 14.67 (11.91, 16.80)
Fibrotic Area% 25.78 ± 9.16 24.10 (19.55, 28.94)
  1. aFVC Forced Vital Capacity, bDLCO Diffusing Capacity for carbon monoxide, cGAP Gender-Age-Physiology index, dHAA High attenuation areas