Serum Bilirubin Levels and Disease Severity in Patients with Pneumoconiosis

Table 2

The association between serum direct bilirubin and radiological severity according to the multiple linear-regression analysis.

	Unstandardized coefficients		Standardized coefficients	t	value
	B	Standard error	Beta
Sex	0.123	0.661	0.028	0.186	0.853
Age	0.015	0.019	0.126	0.784	0.438
Smoking history	0.135	0.343	0.063	0.393	0.696
Alanine aminotransferase	−0.028	0.026	−0.175	−1.052	0.300
Aspartate aminotransferase	0.042	0.041	0.168	1.009	0.319
Radiological severity (I/II vs. III stages)	−0.992	0.335	−0.459	−2.957	0.005