TABLE 1

Clinical characteristics by ethnicity

Clinical characteristicsEuropean AmericansAfrican Americans
n138118
Age (years)34 ± 1331 ± 12*
IFG [n (%)]13 (9.4)11 (9.3)
BMI (kg/m2)26.8 ± 4.427.4 ± 4.0
Percent fat mass39.2 ± 7.337.2 ± 7.7*
Fasting glucose (mg/dl)90.8 ± 7.388.6 ± 6.9*
Fasting insulin (μU/ml)10.5 ± 1.411.7 ± 1.4*
Si × 10−4 (min · μU−1 · ml−1)3.71 (3.36–4.12)2.38 (2.16–2.67)*
AIRg (μU/ml per 10 min)415 (372–466)925 (828–1,035)*
DI (Si × AIRg)1,480 (1,324–1,683)2,121 (1,896–2,378)*
  • Data are n (%), means ± SE, or geometric means (95% CI).

  • *

    * P < 0.05 compared with European Americans. n (%) refers to the number and percentage of subjects with IFG.