Table 3.

Distribution (%) of HbA1c Levels

NHANES III
MRG Data Set
Glucose (mg/dl)No. of Subjects (%)aHbA1c (%)bNo. of Subjects (%)cHbA1c (%)d
≤6.16.2–7.0≥7.1≤6.36.4–7.2≥7.3
Fasting
   <1102,284 (84)97.32.70.17,908 (89)96.23.630.2
   110–125373 (11)86.713.10.2602 (7)81.416.42.2
   126–13977 (2)60.935.83.4131 (1)59.616.47.6
   ≥140102 (3)18.632.548.9276 (3)16.721.062.3
2-h OGTT
   <1402,021 (76.2)97.22.70.17,248 (81.3)97.12.80.1
   140–199 554 (17.1)91.48.50.11,109 (12.4)88.411.10.8
   200–239111 (2.80)69.429.51.1209 (2.4)62.232.15.7
   ≥240150 (3.9)40.924.734.4349 (3.9)21.825.852.4
  • aBased on U.S. population after weighting the surveyed population, which oversampled minorities.

  • bUpper limit of normal = 6.1%.

  • cPercent of MRG population.

  • dUpper limit of normal = 6.3%.