Table 4.

Variables in the Equation.

Factor	B	SE	Wald	P	OR	95% C.I. for OR
						Lower	Upper
Age	0.102	0.022	18.803	0.001	1.105	1.058	1.157
Hexane	0.011	0.0001	6.276	0.011	1.002	1.000	1.001
2.2.4.6.6-pentamethylheptane	0.022	0.005	12.757	<0.001	1.022	1.010	1.031
1,2,6-trimethylnaphthalene	−0.517	0.203	6.664	0.010	0.594	0.403	0.882
Constants	−9.005	1.884	22.777	<0.001	0.001