真阳性率

CT的真阳性率为73%，假阴性率为27%，敏感性100%。

The true positive rate of CT was 73 % , the false negative rate was 27 % , and the sensitivity was 100 % .

结论IVUS能够较为准确地识别斑块破裂及血栓形成IVUS诊断斑块破裂、血栓的真阳性率为85%，假阴性率为15%，敏感性为85%，特异性67%。

By comparing the results of IVUS with histopathology , the true positive rate was 85 % and false negative rate was 15 % , the sensitivity and specificity of IVUS were respectively 85 % and 67 % .

3DDSA的MIP真阳性率94%，假阴性率为6%；

The same two rates of 3D DSA were 94 % and 6 % respectively ;

测试指标包括检测灵敏度、真阳性率、假阳性率、特异度和准确度等。

The test criteria included test sensitivity , positive predictivity , false positive rate , specificity and accuracy .

这样做可以在基本不降低真阳性率的情况下，大大降低假阳性率。

This method can reduce the rate of false positive greatly , on the base of not reducing the rate of true positive .

为了进一步提高真阳性率而降低假阳性率，还引入了相关反馈的方法，使得假阳性区域进一步减少。

To improve the ture positive while reduce false positive , the relevance feedback is introduced to filter out the number of false positives .

在地级模拟中，每个地区选取3个县，可对全省的非碘盐问题地区较为准确地判定，真阳性率达到100%。

At prefecture level , when randomly selecting and checking 3 counties , the samples would satisfy the discovery of all the risk areas with non iodized salt problem .

阳性似然比为试验结果真阳性率与假阳性率之比，阳性预测值和阳性似然比是综合评价敏感度和特异度的指标。

Positive likelihood ratio was equal to true positive rate / false positive rate in the trial result . The positive predictive value and positive likelihood ratio were the indexes to assess the sensitivity and specificity comprehensively .

结果显示：19个必要基因中16模型识别正确，12个非必要基因中9个模型识别正确，即假阳性率为0.25，真阳性率为0.842。

The results showed that : 16 in the 19 essential genes are identified right and 9 in the 12 non-essential genes s are identified right , the false positive rate is 0.25 and the true positive rate is 0.842 .