Table 1—

Characteristics among individuals who have been told they have diabetes and who received an A1C measurement by NHANES wave

NHANES 1999–2000NHANES 2001–2002NHANES 2003–2004
n403448482
Age (years)59.0 ± 0.857.4 ± 1.259.7 ± 0.8
    18–44 (%)15.6 ± 2.722.1 ± 3.413.2 ± 1.6
    45–64 (%)45.8 ± 3.344.2 ± 3.444.9 ± 2.9
    65+ (%)38.6 ± 2.133.8 ± 3.441.9 ± 3.3
Sex (%)
    Female48.4 ± 3.749.7 ± 2.052.4 ± 1.4
    Male51.6 ± 3.750.3 ± 2.047.6 ± 1.4
Race/ethnicity (%)
    White non-Hispanic61.2 ± 6.263.4 ± 3.970.8 ± 5.4
    Black non-Hispanic15.8 ± 3.814.4 ± 3.014.0 ± 2.9
    Hispanic17.0 ± 6.515.1 ± 4.511.3 ± 3.6
    Other5.9 ± 3.37.0 ± 2.43.8 ± 1.2
Education (%)
    <High school43.2 ± 3.930.5 ± 2.729.8 ± 2.3
    High school25.7 ± 4.524.7 ± 2.224.3 ± 2.2
    >High school31.1 ± 4.744.8 ± 3.245.9 ± 2.7
BMI (kg/m2)32.3 ± 0.631.5 ± 0.532.2 ± 0.7
    <30 (%)45.8 ± 4.448.7 ± 4.142.8 ± 4.0
    ≥30 (%)54.2 ± 4.451.3 ± 4.157.2 ± 4.0
Income (%)
    <$20,00036.3 ± 4.128.8 ± 3.428.7 ± 2.8
    $20,000+63.7 ± 4.171.2 ± 3.471.3 ± 2.8
Insurance (%)87.0 ± 2.991.3 ± 1.889.7 ± 1.5
Duration (%)
    <5 years34.3 ± 3.637.5 ± 3.133.7 ± 2.8
    5–14 years33.1 ± 3.035.0 ± 3.039.1 ± 2.5
    15+ years32.6 ± 3.027.3 ± 2.427.0 ± 2.8
Smoker (%)
    Current16.4 ± 2.622.6 ± 2.020.4 ± 2.4
    Former33.2 ± 3.731.4 ± 2.134.6 ± 2.4
    Never50.5 ± 4.946.0 ± 2.445.0 ± 2.9
Diabetes treatment (%)
    Diabetes pills only53.2 ± 3.656.6 ± 2.458.9 ± 3.6
    Insulin only16.2 ± 2.216.4 ± 3.513.6 ± 2.0
    Pills and insulin10.7 ± 3.59.5 ± 1.89.2 ± 1.9
    Diet only19.9 ± 3.717.5 ± 2.718.3 ± 2.8
  • Data are means ± SEM.