Reply to: Li J, Cao Y “Serum ferritin as a biomarker for diabetes and insulin resistance: a further study”

Abstract

We thank Drs. Li and Cao for their careful comments [1] to our recent report regarding the association between serum ferritin and diabetes [2]. We agree with the point that metabolic syndrome (MS) components should be taken into account of the analysis or adjusted for as confounders in the multiple regression models. In our paper, we have already adjusted for several metabolic biomarkers including BMI, serum lipids, and hypertension. Additional adjustment for other MS components, such as waist circumference, might incur over adjustment due to collinearity.