Figure 2From: Urine hepcidin has additive value in ruling out cardiopulmonary bypass-associated acute kidney injury: an observational cohort studyUrine hepcidin concentration over time. Patients not developing acute kidney injury (AKI) (white bars) are compared to those with AKI (hatched bars) (A) for all patients and (B) after excluding patients with chronic kidney disease (CKD). Error bars at top and bottom define th 95% confidence interval and the black lines within boxes the medians.Back to article page