Table 1

Crude and age-adjusted prevalence of prediabetes in adults aged ≥18 years, by prediabetes indicator, NHANES 2005–2008

A1C5.7IFG100IGTIFG110A1C5.7 or IFG100A1C5.7 or IGTA15.7 or IFG110
n6961,0745973031,3951,069856
Crude
 Total14.2 (0.7)26.2 (1.0)13.7 (0.8)7.0 (0.5)32.2 (0.9)23.5 (0.7)18.1 (0.7)
 18–44 (years)6.7 (0.6)18.8 (1.2)8.4 (0.8)4.3 (0.6)22.0 (1.1)13.7 (0.9)9.7 (0.6)
 45–64 (years)19.3 (1.6)34.0 (2.3)15.5 (1.5)8.9 (1.0)41.0 (2.3)29.3 (1.5)24.0 (1.7)
 65+ (years)25.6 (2.3)31.6 (1.5)25.9 (1.9)10.6 (1.4)43.6 (2.1)40.3 (2.1)30.6 (2.2)
 Male14.3 (0.9)33.1 (1.5)12.8 (0.9)8.8 (0.8)37.9 (1.6)23.1 (1.0)19.7 (1.0)
 Female14.1 (1.1)19.7 (1.1)14.6 (1.1)5.2 (0.6)26.8 (1.0)24.0 (1.1)16.7 (0.9)
 NH white12.9 (1.0)27.1 (1.3)14.5 (1.1)7.5 (0.7)32.1 (1.4)22.9 (1.2)17.3 (1.0)
 NH black24.8 (1.6)17.9 (1.4)7.3 (0.8)3.7 (0.8)33.6 (1.7)28.0 (1.5)26.1 (1.8)
 Mex-Am13.2 (1.3)28.3 (2.2)15.1 (1.5)7.1 (1.1)33.9 (1.9)24.0 (2.1)17.3 (1.4)
Age-adjusted*
 Total13.7 (0.6)25.5 (0.9)13.5 (0.7)6.8 (0.5)31.4 (0.8)22.9 (0.6)17.5 (0.5)
 Male14.0 (0.7)32.3 (1.4)12.8 (0.8)8.7 (0.7)37.1 (1.4)22.7 (0.7)19.2 (0.8)
 Female13.3 (1.0)19.1 (1.1)14.2 (1.0)5.1 (0.6)25.8 (1.0)23.0 (1.1)15.9 (0.9)
 NH white11.6 (0.8)25.5 (1.2)13.6 (0.9)7.0 (0.6)30.0 (1.3)21.1 (0.9)15.8 (0.8)
 NH black24.4 (1.6)17.3 (1.3)7.4 (0.8)3.5 (0.7)33.0 (1.7)27.8 (1.5)25.6 (1.8)
 Mex-Am14.6 (1.3)27.5 (2.1)16.1 (1.3)7.5 (1.1)34.0 (1.8)25.9 (1.7)19.0 (1.4)
  • Data are percent based on weighted data (SE). Estimates are based on the morning OGTT subsample. Diagnosed and undiagnosed diabetes estimates not shown. Includes racial/ethnic groups not shown separately.

  • *Standardized to the 2000 U.S. Census population by age using three age groups (18–44, 45–64, ≥65 years).

  • Mex-Am, Mexican American; NH, non-Hispanic; n, unweighted number.