Table 1.

The patterns of fibroelastosis in IPPFE patients

Patterns of fibroelastosis Thickness of fibroelastosis	Zonal elastosis, %	Two-layered pattern, %	Intra-alveolar fibrosis with septal elastosis, %	P value†
Any thickness	37.7 (33.0-46.6)	40.4 (35.0-44.0)	19.1 (3.39-25.2)	1.00
<1 mm thick	69.1 (54.7-87.9)	14.6 (1.88-23.2)	0 (0-18.4)	0.002
≥1 mm thick	33.0 (16.1-39.4)	51.9 (44.4-59.9)	14.0 (0-30.9)	0.04

^*The data are expressed as the group median (interquartile range).

^†P-values were calculated for the comparison of the zonal elastosis and two-layered patterns.