Fig. 1

Cross-sectional association of insulin resistance indexes with aortic stiffness in adults ages 67–90. HOMA-IR homeostatic model assessment of insulin resistance, TG/HDL-C triglyceride to high-density lipoprotein cholesterol ratio, TyG triglyceride and glucose index, cfPWV carotid-femoral pulse wave velocity. The difference and 95% CI are interpreted as the difference in aortic stiffness per standard deviation increment in insulin resistance index. The test for interaction is the p-value for the product term of insulin resistance index, that has been standardized, and gender. Estimates are adjusted for age, gender (except for gender-specific estimates), and race/study site. The standard deviation was 1.6 for HOMA-IR, 1.3 for TG/HDL-C, and 0.4 for TyG