Table 2. Racial and ethnic differences in A1C in a multiple-regression model adjusting for the effects of other covariates on A1C.

Parameter	Estimate	SE	P	Type II semipartial R2
Race (vs. white)
Black	0.404	0.0205	<0.0001	0.0811
Hispanic	0.149	0.0220	<0.0001	0.00959
American Indian	0.206	0.0374	<0.0001	0.00630
Asian	0.343	0.0376	<0.0001	0.0173
Age at randomization	0.0105	0.000833	<0.0001	0.0328
Sex (female vs. male)	0.0786	0.0224	0.0005	0.00256
Systolic blood pressure	−0.00146	0.000700	0.0371	0.00091
Diastolic blood pressure	0.00357	0.00105	0.0007	0.00239
BMI	0.00527	0.00234	0.0240	0.00106
Fasting glucose	0.259	0.0205	<0.0001	0.0335
Glucose AUC	0.0245	0.0112	0.0286	0.00010
CIR	−0.0641	0.0231	0.0055	0.00160
Insulin resistance (HOMA-IR)	0.00543	0.00242	0.0251	0.00104

Data are also adjusted for education, marital status, waist circumference, and hematocrit; all not significant at 0.05 level.