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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Thorac Cardiovasc Surg. 2014 Apr 12;148(2):726–732. doi: 10.1016/j.jtcvs.2013.09.080

Figure 2.

Figure 2

The distribution of urinary biomarkers in different groups by blood transfusion is shown in box plot. The bars represent the inter-quartile range and the solid lines in the bars represent the median values of first post-operative urinary IL-18 and urinary NGAL. The median values of both urinary IL-18 and urinary NGAL were significantly elevated in the group that received > 2 PRBC units compared to those who received < 2 (P values for Wilcoxon test <.0001 and <.0001 respectively) or no blood (P values for Wilcoxon test <.0001 and <.0001 respectively).

* No Blood vs. More than 2 PRBC p value <.0001,

^ Less than 2 PRBC vs. More than 2 PRBC p value <.0001.