Table 1 Characteristics of study population (n = 74)

Demographics

 Age, years

65.7 ± 9.2

(30 - 86)

 Male

49 (66 %)

-

 Smoking (yes)

45 (60 %)

 Interval from diagnosis, months

58.1 ± 48.2

(1 - 263)

Diagnosis

 IPF

36 (49 %)

 NSIP

9 (12 %)

 Other

29 (39 %)

Pulmonary function tests

 %FVC, %

72.2 ± 20.0

(29.0 - 113.3)

 %DLCO, %

54.1 ± 21.8

(10.3 - 122.9)

Quantitative CT indices

 HAA% (>-200 HU), %

1.83 ± 1.15

(0.27 - 7.01)

 LAA% (<-960 HU), %

3.91 ± 4.25

(0.14 - 22.5)

 CA%, %

0.94 ± 1.85

(0 - 10.54)

 MLD, HU

−758.0 ± 53.3

(−860.3 - −635.7)

 SD-LD, HU

195.9 ± 22.6

(152.5 - 259.4)

 Kurtosis

2.40 ± 1.81

(−0.53 - 7.45)

 Skewness

1.61 ± 0.44

(0.66 -2.68)

CT visual scores

 GGO score [0-5]

0.45 ± 0.52

(0 - 2.06)

 Fibrosis score [0-5]

1.66 ± 0.68

(0.33 - 3.28)

 Fibrosis score ≥2 in any field

48 (65 %)