Figure 2. Receiver operating characteristic Curves for Performance of Transvaginal Ultrasonography (TVUS) Endometrial Thickness (ET) Thresholds for Identifying Endometrial Cancer Among a Simulated Cohort of US Black and White Women With Postmenopausal Bleeding.

Sensitivity and specificity in Black (area under the receiver operating characteristic [ROC] curve, 0.57) (A) and White (ROC, 0.73) (B) women. The thickened line represents test performance by area under the curve (AUC) in which the further distance from the thinner reference line (AUC, 0.5, no discriminatory power) demonstrates greater discriminatory power of a test. An AUC greater than 0.7 is considered the threshold for fair performance. With regard to the use of TVUS to measure ET among women with postmenopausal bleeding, the AUC is greater for White women compared with Black women, and the AUC for Black women does not meet the threshold of fair performance.