Multivariate linear regression analysis examining correlations between baseline characteristics and medullary and cortical R2* levels.

Correlations are expressed as regression coefficient β. Correlations between R2* levels and predefined factors are shown under (A). The analysis including the additional variables glycemia, serum uric acid level and 24 h urinary proteinuria in the model is shown under (B). 1adjusted for gender, age, BMI, eGFR, smoking, urinary sodium excretion, Hemoglobin, and diabetes.