Table 1 Clinical characteristics

Gender ( Female / Male)

22 / 30

Age at TBLC (yr)

63.5 (55.0–67.3)

Smoking history (never/ex-smoker/ current)

19 / 30 / 3

Serologic domain of IPAF (yes/no)

20 / 32

%FVC

84.8% (76.6–94.6)

%DLco

69.3% (60.4–80.7)

HRCT IPF diagnostic criteria

(UIP/Probable/Indeterminate/Alternative)

TBLC

2/6/21/23

SLB

3/5/21/23

Time from cryobiopsy to SLB (days)

57 (43.5–81.8)

Numbers of specimens (1/2/3)

TBLC

6 / 33 / 13

SLB

3 / 47/ 2

Biopsied from multiple lobes (yes/no)

TBLC

9/43

SLB

49/3