Table 2.

Parameter estimates resulting from fit of dose and interaction thresholds model to the single chemical and mixture data along the ray.

Parameter	Estimate	Standard Error	P-value
β1(CA)	−1.83	0.077	<0.0001
β2(DCA)	−0.22	0.008	<0.0001
β3(TCA)	−0.51	0.022	<0.0001
β4(BA)	−149.2	5.32	<0.0001
β5(DBA)	−2.93	0.108	<0.0001
β6(TBA)	−19.9	0.896	<0.0001
β7(BDCA)	−1.99	0.074	<0.0001
β8(DBCA)	−7.25	0.339	<0.0001
β9(BCA)	−1.80	0.066	<0.0001
δadd	−0.2692	0.0268	<0.0001
θmix	13.61	0.952	<0.0001
θmix2	−23.9	3.33	<0.0001
Δ	0.083	0.007	<0.0001
τ	12.47
θadd(10)	−10.5	0.334