Table 1—

Mean, SE, and percentiles for HbA1c by age, sex, ethnicity, education, and overweight among U.S. children and youths (NHANES III, 1988–1994)

MeanSE10%20%30%40%50%60%70%80%90%95%
Total4.990.014.474.634.744.854.945.035.135.245.395.52
Age (years)
 5–94.980.024.464.644.754.844.935.015.115.235.375.47
 10–145.030.024.534.694.814.904.995.085.175.285.435.57
 15–194.970.024.454.624.734.834.935.025.115.225.375.51
 20–244.970.024.434.604.704.814.925.025.135.245.395.53
Sex
 Male5.020.024.504.684.804.904.985.075.175.275.425.55
 Female4.950.014.444.604.704.794.904.995.085.205.375.49
Ethnicity
 Non-Hispanic white4.930.024.444.604.704.794.894.975.065.175.315.42
 Non-Hispanic black5.160.014.544.774.935.055.155.265.365.475.645.78
 Mexican-American5.050.014.554.734.834.925.015.095.185.275.405.51
Education
 <High school5.040.024.484.674.804.915.005.105.205.305.465.57
 High school5.010.024.504.664.774.874.955.055.145.255.405.55
 >High school4.940.024.444.594.704.794.904.985.075.195.345.46
Poverty
 Low5.020.024.474.664.774.884.985.085.175.285.445.58
 Medium4.980.024.474.644.744.844.935.025.115.235.375.48
 High4.900.024.434.564.674.764.864.945.025.135.305.44
Parent history of diabetes
 Yes5.090.044.474.714.824.935.035.125.215.35.485.59
 No4.980.014.474.634.744.844.945.035.125.245.395.51
Overweight
 Yes5.100.034.494.724.864.965.045.135.245.355.515.66
 No4.970.014.474.634.734.834.935.025.125.235.385.50
Fasting glucose (n = 2,809)
 ≥126 mg/dl*6.915.05.375.755.95.977.27
 110–125 mg/dl5.14.374.724.774.95.145.25.255.295.55.75
 <110 mg/dl4.984.484.634.734.844.945.035.125.225.375.5
  • *

    * Some cells are empty due to the small number of participants with fasting glucose ≥126 mg/dl.