Table 4.

Multivariable Cox proportional hazards model for the independent association of bronchiolocentric fibrosis with overall survival in the total cohort and the cohort diagnosed with idiopathic pulmonary fibrosis.

Total cohort (n=252)	Hazard ratio	95%CI	P value
Bronchiolocentric fibrosis	0.68	( 0.41, 1.13 )	0.13
Age	1.03	( 1.00, 1.06 )	0.06
Male	0.92	( 0.55, 1.55 )	0.75
Ever-smoking	1.40	( 0.87, 2.25 )	0.17
IPF	1.40	( 0.72, 2.74 )	0.32
GERD	0.59	( 0.36, 0.95 )	0.03
%FVC	0.98	( 0.96, 0.99 )	0.004
%DLCO	0.99	( 0.98, 1.01 )	0.22
IPF cohort (n=215)
Bronchiolocentric fibrosis	0.82	( 0.48, 1.40 )	0.47
Age	1.03	( 1.00, 1.06 )	0.08
Male	1.01	( 0.56, 1.81 )	0.97
Ever-smoking	1.12	( 0.68, 1.86 )	0.65
GERD	0.60	( 0.36, 1.01 )	0.06
%FVC	0.98	( 0.96, 0.99 )	0.01
%DLCO	0.98	( 0.97, 1.00 )	0.11