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Factors Associated With Poor Glycemic Control or Wide Glycemic Variability Among Diabetes Patients in Hawaii, 2006–2009

Age, yLevel of Glycemic ControlP Value
Good (n = 166), %Poor (n = 2,034), %Wide Variability (n = 76), %Some Variability (n = 694), %
<352.44.89.22.2<.001
35–4922.324.029.018.6
50–6450.650.239.549.0
65–7918.717.018.423.9
≥806.03.93.96.3

Figure 1. Glycemic control related to age in patients with diabetes, unadjusted, Hawaii, 2006–2009. Good control indicated by an HbA1c of less than 7% for 3 years, and poor control indicated by an HbA1c higher than 9% for 3 years. Wide glycemic variability refers to patients who had a reduction in annual mean HbA1c from higher than 9% to less than 7%, followed by an increase to higher than 9%. Some variability refers to patients who did not meet criteria for the other 3 categories. Glycemic control differed significantly by age (P < .001, Pearson χ2 tests).

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Diabetes Duration, yLevel of Glycemic ControlP Value
Good (n = 166), %Poor (n = 2,034), %Wide Variability (n = 76), %Some Variability (n = 694), %
≥1032.556.750.051.6<.001
8–912.113.813.213.8
6–79.014.011.813.11
4–513.98.77.910.1
1–332.56.817.111.4

Figure 2. Glycemic control related to duration of diabetes in patients with diabetes, unadjusted, Hawaii, 2006–2009. Good control was indicated by an HbA1c of less than 7% for 3 years, and poor control was indicated by an HbA1c higher than 9% for 3 years. Wide glycemic variability refers to patients who had a reduction in annual mean HbA1c from higher than 9% to less than 7%, followed by an increase to higher than 9%. Some variability refers to patients who did not meet criteria for the other 3 categories. Glycemic control differed significantly by duration of diabetes (P < .001, Pearson χ2 tests).

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