Table 4.

Distribution of high-resolution computed tomography-detected parenchymal-interstitial abnormalities according to the severity of the restrictive defects at pulmonary function tests in the overall study population, and results of logistic regression analysis for prediction of moderate-to-severe restrictive defects at PFTs n (%)

Abnormality	Absent	Mild	Moderate	Severe	Univariate analysis	Multivariate analysis
	n = 47	n = 1	n = 4	n = 0	P-value	P-value (odds ratio)
Consolidation	11 (23.4)	1 (100)	2 (50)	0 (0)	NS	NS
Ground-glass opacity	10 (21.3)	1 (100)	2 (50)	0 (0)	NS	NS
Nodules	23 (48.9)	1 (100)	2 (50)	0 (0)	NS	NS
Linear and/or irregular opacities	8 (17)	1 (100)	3 (75)	0 (0)	0.0029	0.0344 (13.00)
Bullae/cysts	5 (10.6)	0 (0)	0 (0)	0 (0)	NS	NS

NS: Non-significant.