Medical Diagnostic Tests: A Review of Test Anatomy, Phases, and Statistical Treatment of Data

Figure 1

Summary receiver operating characteristic (ROC) curve for BMI as an anthropometric marker to distinguish benign from malign breast tumors. The red line shows an equal proportion of correctly classified breast cancer sample and incorrectly classifies samples without breast cancer (random classification). The J max (max (Se + Sp − 1)) corresponds to a Se = 0.67 and a Sp = 0.88 for a cutoff > 29.5 kg/m² (BMI) for the breast cancer sample.