Table 2—

Summary of test performances

TestSensitivityThresholdSAGE sensitivity advantage
SAGE74.7%50AbsoluteRelative
FPG58.0%100 mg/dl6.7%28.8%
A1C63.8%5.8%10.9%17.1%
  • Comparison of sensitivities for SAGE, FPG, and A1C for detecting abnormal glucose tolerance. The FPG threshold for IFG (100 mg/dl) set the critical specificity (77.4%) for this comparison. Thresholds for each test at the critical specificity are indicated. The right section notes the performance advantage of SAGE over the two blood-based tests in terms of absolute and relative sensitivity.