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. Author manuscript; available in PMC: 2009 Nov 30.
Published in final edited form as: Am J Clin Nutr. 2008 Nov;88(5):1277–1283.

Table 2.

Results from multiple linear regression analyses for the dependent variables early insulin response (a) and early C-peptide response (b), n=52.

a. Dependent variable: early insulin response. R2=0.48.
B SE P-value
Model -5.09 2.03 0.016
Ethnicity 0.19 0.06 0.004
Early glucose response 2.03 0.61 0.002
Early GIP response 0.46 0.14 0.002
b. Dependent variable: early C-peptide response. R2=0.46.
Model -5.02 1.4 0.001
Ethnicity 0.003 0.05 0.95
Early glucose response 1.63 0.43 <0.001
Early GIP response 0.36 0.10 0.001

All variables were log transformed. Ethnicity was entered as a categorical variable: 1 = European American; 2 = African American. Early response is defined as the area under the curve for minutes 0-30 post challenge. Model a: R2 excluding ethnicity = 0.39. Model b: R2 excluding ethnicity = 0.48.