Table 6. Coefficients in multiple linear regression.

Variables	Unstandardized coefficients			Standardized coefficients	t	P	Collinearity statistics
	B	Std. error		Beta			Tolerance	VIF
Constant	528.154	31.971		–	16.520	<0.001	–	–
BALF PAI-1 (T2)	−11.229	5.499		−0.255	−2.042	0.047	0.263	3.798
Serum TF (T1)	−7.084	2.688		−0.337	−2.635	0.011	0.252	3.963
BALF TF (T2)	−7.818	2.980		−0.191	−2.623	0.012	0.779	1.284

BALF, bronchoalveolar lavage fluid; PAI-1, plasminogen activator inhibitor-1; TF, tissue factor.