The utility of electron microscopy in detecting asbestos fibers and particles in BALF in diffuse lung diseases

BMC Pulmonary Medicine

Table 6 The univariate and multiple regression analysis for the fraction of iron of particles in bronchoalveolar lavage fluid

	Univariate regression analysis		Multiple regression analysis
Variables	Standardized beta Coefficient	P	Standardized beta Coefficient	P
History of occupational exposure positive	0.288	0.011	0.337	<0.001
Positive detection of AFs in BALF by electron microscope	0.17	0.089	0.184	0.055
Age, (yr)	−0.185	0.049	−0.181	0.045
Male	0.071	0.537
Smoking history positive	0.04	0.719

AFs uncoated asbestos fibers and asbestos bodies, BALF bronchoalveolar lavage fluid

ISSN: 1471-2466