Fig. 1From: Increased C4 and decreased C3 levels are associated with a poor prognosis in patients with immunoglobulin A nephropathy: a retrospective studyResult from the linear regression analysis of the relationship between serum complement levels and eGFR values. Linear fitting showed that there was no significant correlation between serum C3 levels and eGFR values. Analyses also demonstrated that higher serum C4 levels were associated lower values of eGFR. Grey area outside the fitted line was the confidence interval of the fitted valueBack to article page