Fig. 1

Receiver operating characteristic (ROC) curve of endometrial thickness (ET) for the assessment of endometrial carcinoma. At left, post-menopausal women with endometrial thickening (N = 234, two missing values): the area under the ROC curve (AUC) was 0.828 (P < 0.001). An ET cut-off value yielded a sensitivity of 72.7% and specificity of 86%. At right, post-menopausal women with endometrial thickening, regardless of polyp status (N = 436, 49 missing values): the AUC was 0.662 (P = 0.024, < 0.05). An ET cut-off value of 10.5 mm yielded a sensitivity of 52.9% and specificity of 80.8%