Table 2.

Pearson correlation matrix of self-reported occupational exposure to dusts, automotive exhaust, diesel fumes, wood smoke, woodworking, and asbestos.

	Sawdust	Concrete dust	Leather dust	Metal dust	Chimney soot	Auto exhaust	Diesel fuel	Wood smoke	Woodworking	Asbestos
Sawdust	1.00
Concrete dust	0.57	1.00
Leather dust	0.13	0.15	1.00
Metal dust	0.39	0.39	0.22	1.00
Chimney soot	0.34	0.37	0.22	0.30	1.00
Automotive exhaust	0.38	0.41	0.15	0.32	0.32	1.00
Diesel fuel	0.37	0.45	0.16	0.33	0.34	0.60	1.00
Wood smoke	0.45	0.44	0.20	0.32	0.48	0.36	0.37	1.00
Woodworking	0.65	0.50	0.15	0.37	0.30	0.35	0.31	0.49	1.00
Asbestos	0.46	0.49	0.14	0.37	0.38	0.35	0.35	0.33	0.38	1.00