Table 1.

IMF parameter estimates for the model seen in equation 1a using categorical isoelectric point and density.

Variable	βs	β Parameter Estimate	Standard Error	t Value	Pr > |t|
Intercept	β1	0.923	0.016	59.57	<.0001
Isoelectric High	β2	0.172	0.034	5.12	<.0001
Isoelectric Med.	β3	0.157	0.032	4.85	<.0001
Isoelectric Low.	β4	−0.008	0.049	−0.16	0.8718
Ligand OEG	β5	−0.004	0.044	−0.09	0.9245
Ligand Glc	β6	0.015	0.048	0.3	0.7622
Ligand Man	β7	0.065	0.047	1.41	0.1602
Density High	β8	0.381	0.037	10.21	<.0001
Density Med.	β9	0.097	0.031	3.12	0.0019
Density Low**	β10	0	.	.	.
Donor*	β11–22	−0.594 – 0.660	0.058	−10.21 – 11.35	<.0001

^*All donor estimates, standard errors, t values, and probabilities can be seen in the Error! Reference source not found. in the supplemental.

^**Low density conjugates varied linearly with the control due to no difference between cell response to low density and no ligand groups. Thus, this group had to be removed from the model.