Fig. 1.

Performance metrics for all three formulas compared to VLDL-C measured by ultracentrifugation in the overall population, showing RMSE for the overall population (RMSE1, n = 340) and for subjects with triglycerides < 800 mg/dL (RMSE2) comparing VLDL-C measured by Martin’s (a), Sampson’s (b) and the Friedewald’s equation. The figure also shows Bland-Altman plots showing bias and limits of agreement for VLDL-C estimated using Martin’s (d), Sampson’s (e) and the Friedewald’s equation (f). Abbreviations = RMSE: Root of Mean Squared Error; 95%CI: 95% Confidence Interval; LDL-F: LDL-C estimated by the Friedewald’s equation; LDL-M: LDL-C estimated by Martin’s formula; LDL-S: LDL-C estimated by Sampson’s formula