Table 1—

Specificity, sensitivity, positive and negative predictive values, and ROC for the classification tree applied to elevated plasma glucose and undiagnosed diabetes

Sensitivity (%)Specificity (%)PPVNPVROC
Undiagnosed diabetes
    Training88.1674.920.13690.99290.8508
    v-fold cross-validation78.2274.130.8219
    NHANES 1999–200481.0266.810.06270.99230.7685
Prediabetes or undiagnosed diabetes
    Training75.3664.590.49400.85110.7503
    NHANES 1999–200477.6551.360.40530.84330.6991
  • NPV, negative predictive value; PPV, positive predictive value.