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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Am J Hematol. 2015 Apr 2;90(5):422–428. doi: 10.1002/ajh.23982

Figure 3.

Figure 3

RDW and glycated hemoglobin depend on vc. Panel A shows RDW and vc for 450 randomly selected patients with CBCs at Massachusetts General Hospital. See “Correlation Cohort” in Methods. The correlation coefficient (ρ) is −0.91. Panel B shows boxplots of glycated hemoglobin for 74 non-diabetic individuals with vc < 0.775 (median vc = 0.77) and 115 individuals with vc > 0.79 (median vc = 0.80). See “A1c Cohort” in Methods for more detail. The red horizontal lines show the medians of each group (5.5% and 5.3%). These medians are different according to a Kruskall–Wallis test with P < 0.002. The low vc group had a median RDW of 14.6%, and the high vc group had a median RDW of 12.9%. The notches show the 95% confidence intervals for the medians. The boxes extend from the 25th to the 75th percentile for each group.