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Receiver Operating Characteristic curves (ROC) for the relationship between CUMD and orgasm in intercourse for the Bonaparte (5a) and Landis samples (5b). Although both ROCs accounted for significant area under the curve, the Bonaparte sample accounted for more area than did the Landis sample and showed greater sensitivity and specificity. The dashed diagonal like represents 0.5 area under the curve, which would reflect a chance relationship between CUMD and orgasm in intercourse.
