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. 2010 Jul 9;33(10):2133–2139. doi: 10.2337/dc09-1665

Figure 1.

Figure 1

The percentages of A1C values occurring in 0.1% intervals are plotted separately for each of the denominators. The percentage within each nonoverlapping A1C range within each denominator is reported. Relatively similar distributions are observed for the NCQA (△) and non-CGR(●), whereas the CGR (■) distribution differed more markedly in both skewness and kurtosis as a result of a greater proportion of patients having higher A1C values.