high sensitivity/specificity分别代表着什么,ppv以及nppv还有
figure 2. sensitivity and specificity of assays for pthrp.
提取出其中的关键词就是 auc,sensitivity 和 specificity 等
timeroc 最优最佳截断值特异度(specificity)与灵敏度(sensitivity)
阳/阴性预测值positive/negative predictive value(推荐aa)
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