Figure 1.

Independent relationship between vitamin D intake and insulin sensitivity in African Americans. A) Vitamin D vs. Insulin Sensitivity Index (S_I) and B) Vitamin D vs. Homeostasis Model Assessment of Insulin Resistance (HOMA-IR). Relationships are adjusted for age, kcal intake, % kcal from fat, total body fat, and test type. The relationships among European Americans was not statistically significant (standardized β = 0.03, P = 0.74 and standardized β = 0.02, P = 0.85 for S_I and HOMA-IR, respectively).