Table 1—

Demographic characteristics of adults with diabetes by HbA1c (N = 1,018)

HbA1c level
Total<7%7–8.9%9–10.9%≥11.0%P*
Age (years)0.27
 17–354.74.22.39.17.5
 36–5021.120.215.726.635.3
 51–6534.233.136.533.533.3
 66+40.042.545.530.823.9
Sex0.30
 Male47.346.352.838.451.3
 Female52.753.747.261.648.7
Race<0.01
 White74.474.179.670.564.6
 Black14.815.110.416.326.6
 Mexican American5.84.76.86.68.2
 Other5.06.13.26.60.6
Smoking
 Nonsmoker38.844.634.133.336.10.38
 Ex-smoker41.037.146.642.837.3
 Smoker20.218.319.323.926.6
BMI (kg/m2)0.41
 ≥2761.566.056.957.562.1
 <2738.534.043.142.537.9
Elevated CRP (mg/dl)0.03
 ≥0.3051.548.945.460.770.6
 <0.3048.551.154.739.329.4
Diabetes duration (years)0.30
 <544.245.343.142.746.1
 5–1020.214.727.520.223.3
 >1035.640.029.437.130.6
Fasting insulin (μmol/ml)12.311.325.435.638.8<0.01
  • *

    * Data are % unless otherwise indicated. χ2 analysis comparing HbA1c groups;

  • ANOVA test used to test differences between groups.