查询词典 youden

The sensitivity, specificity, positive predictive value, negative predictive value, Youden's index of three biomarkers were calculated.

以灵敏度为纵坐标，1-特异度为横坐标，分析ROC曲线，从而确定检测的最佳阈值。

The two groups were analyzed and compared using the Student's test and the X2 test; multiple logistic regressions and Youden's index were used to compare the relative predictive power of the tested Orlowki and APACHE II scores.

首先比较两组病患的Orlowski计分与APACHE II计分的差异性；其次评估两种计分法预测病人预后的能力。

Results: SVM gets better results in the sensitivity,specificity,Youden's index and error count estimate than the Logistic.Conclusion: SVM is worth while to be generalized to the prognosis of the disease.

实际工作中，临床医生们经常使用非条件的Logistic回归来对疾病的预后影响因素进行分析，这是因为Logistic回归模型作为一种概率模型，可用于预测某事件发生的概率，而且Logistic回归不要求在因变量服从正态分布的前提下进行预测。

Results (1) With the ROC curve analysis, if the cut-off value of CEA mRNA level was 31.21, the Youden's index was the highest.

最后用多因素Cox回归模型分析影响预后的独立因素。

Three typical diagnostic cut-off points were determined based on the maximum accuracy, the maximum Youden's index and the intersections of sensitivity and specificity.

临床医师及大多数研究者以SUV =2或2 5作为鉴别肿瘤良恶性的分界点[2 6 ] ，但计算SUV的感兴趣区大小却不一致，有的是病灶区具有最大值的单个像素，更多的是在病灶区主观勾画某一大小的ROI计算均值[1 ，7 9] 。

ROC analysis showed that using inflection point and the second extreme point of curvature as judgment indexes, greater area under curve could be obtained, and the Youden index was 0.54-0.64, which exhibited judgment capacity.

说明LOGISTIC曲线模型的数学特征值与物理治疗效果存在明显的关联，LOGISTIC曲线模型对颈椎病物理治疗的过程特征表达充分。

And the ROC was described for further analysis. Results The sensitivity, specificity, positive predictive value, negative predictive value, Youden' index and the area under the curve of ROC of IL-6 were better than those of CRP and PCT.

结果 IL-6的敏感性、特异性、阳性预测值、阴性预测值和约登指数及ROC曲线下的面积值均优于CRP和PCT。

Results The sensitivity,specificity,positive predictive value,negative predictive value,Youden index,accuracy ...

结果检测血清特异性IgG的灵敏度为100·0%，特异度为97·7%，阳性预测值为97·2%，阴性预测值为100·0%，约登指数为0·977，符合率为98·7%，试验的一致率为98·5%；检测血清中总的特异性Ig灵敏度为97·1%，特异度为95·3%，阳性预测值为94·4%，阴性预测值为97·6%，约登指数为0·925，符合率为96·2%，试验的一致率为97·8%；检测唾液中特异性sIgA的灵敏度为96·2%，特异度为94·5%，阳性预测值为89·3%，阴性预测值为98·1%，约登指数为0·907，符合率为95·1%，试验的一致率为97·5%；检测粪便标本中的特异性sIgA的灵敏度为92·0%，特异度为90·2%，阳性预测值为85·2%，阴性预测值为94·9%，约登指数为0·822，符合率为90·9%，试验的一致率为98·6%，CV值均小于15%。

The sensitivity, specificity and Youden's index of the two detective methods in diagnosis for breast cancer were compared respectively while pathologic results from postoperative paraffin slice were considered as the final standard.

以术后石蜡病理切片结果为最终标准，分别对两种检测方法在术前诊断乳腺癌方面的灵敏度、特异性和约登指数进行了比较。

The sensitivity, specificity and Youden's index of PCR were 88.9%, 90.9% and 0.798 respectively when blood culture and five non-specific tests were used as a reference method.

若以血培养加非特异性指标为诊断标准，PCR法的灵敏度为88.9%，特异性为90.9%，正确诊断指数达到0.798。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。