246 chapter 2 Figure 79. SROC curve of qualitative elastosonography, alternative cutoff Summary receiver operating characteristic plot showing sensitivity versus 1-specificity of qualitative elastosonography in indeterminate thyroid nodules with available histopathology, using an alternative cutoff of an elasticity score of 1 (benign) versus elasticity scores of 2 or higher (suspicious). AUC = 0.94 (95% CI: 0.92-0.96). AUC, area under the curve; HSROC, hierarchical summary receiver operating characteristic. Figure 80. Bayesian probability plot of qualitative elastosonography, alternative cutoff Bayesian conditional probability plot showing the post-test probabilities versus prior probabilities of qualitative elastosonography to predict malignancy in indeterminate thyroid nodules, using an alternative cutoff of an elasticity score of 1 (benign) versus elasticity scores of 2 or higher (suspicious), and using the estimated summary likelihood ratios. Positive LR = 1.20 (95% CI: 0.84-1.70). Negative LR = 0.08 (95% CI: 0.01-0.73).
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