Fig. 11From: Assessment of estimated low-density lipoprotein-cholesterol (LDL-c) equations: a systematic review and meta-analysisThe correlation coefficients Friedewald’s and the DeLong’s LDL-c equations with direct measurement in determining levels of LDL-c pooled from 3 matching studies. Both equations had a positive correlation with the direct method, but DeLong’s LDL-c equation gave a strong correlation with the direct method [0.96 (95% CI 0.90–0.99)] compared with Friedewald’s equation [0.95 (95% CI 0.82–0.99)]Back to article page