查询词典 predictive power

The data were analyzed by chi-square test using spss 11.0 statistical analysis software package.results the sensitivity of ecg was 77.2%, specificity 50.0%, false positive rate 50.0%, false negative rate 22.8%, positive predictive value 62.7% and negative predictive value 66.8%.the positive rate of ecg rose with the increase of number of stenosed coronary vessel.

在选择性冠状动脉造影的639例住院患者中，对常规心电图检查进行chd诊断价值的分析比较。并使用spss 11.0统计软件分析包对数据进行r×c表x2检验。结果ecg检查的敏感性为77.2%，特异性为50.0%，假阳性率为50.0%，假阴性率为22.8%，阳性预测值为62.7%，阴性预测值为66.8%。

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。

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%。

Results: The positive detection ratio of IHC and nested PCR were 64.2% and 81.1%, respectively. It was showed that the positive detection ratio of nested PCR was significantly higher than that of IHC (P.01). The nested PCR assay had advantages over IHC on sensitivity, specificity, Youden's index, positive predictive value and negative predictive value.

结果：免疫组化检测和巢式PCR检测的阳性检出率分别为64.2%和81.1%，巢式PCR技术检测肾癌组织支原体在灵敏度、特异度、约登指数、阳性预测值和阴性预测值方面均优于免疫组化技术。

MethodsACCP antibody and RF were detected in serum samples of 90 RA patients, 30 other diseases patients and 35 healthy blood donors.The sensitivity,specificity,positive predictive value, negative predictive value, agreement rate and Youden's index of these parsmeters for the diangnosis of RA were analyzed.

方法对90例RA患者、30例其他疾病患者和35例健康对照组血清用ELISA法检测抗CCP抗体、免疫散射比浊法检测RF，比较2种抗体单独或联合检测对诊断RA的敏感性、特异性、阳性预测值、阴性预测值、总符合率及Youden指数；探讨抗CCP抗体和RF的相关性，通过绘制ROC曲线，计算ROC曲线下面积。

Tail Length, Tail Moment, Tail DNA Percentage, and correction rate were compared between the improved software and the original one, and epidemiological indices for the improved software were also calculated and analyzed, including sensitivity, specificity, Youden index, crude agreement, adjusted agreement, positive predictive value, negative predictive value, positive likelihood ratio, and negative likelihood ratio.

比较改进前后的尾长、尾矩、尾DNA百分含量上的差异、改进前后分析正确率差异、以及改进后的软件以不同DNA损伤级别为截断值判定阳性结果的灵敏度、特异度、Youden指数、粗一致性、调整一致性、阳性预测值、阴性预测值、阳性似然比和阴性似然比。

Overall sensitivity for classifying stenoses was 92%, specificity was 94%, positive predictive value was 82%, and negative predictive value was 96%.

近年来发展起来的多排CT在诊断冠心病方面取得了长足的进步，特别是64排CT在时间及空间分辨率上又有了较大的提升。

Predictive control of nonlinear systems is one of the most important problems in control theory. From the standpoints of theory and practical applications, this dissertation is devoted to predictive control strategies for time-varied linear system and complex nonlinear systems.

实际系统大都是非线性的，因此研究非线性系统的预测函数控制无论在理论上还是在实际应用中都具有重要意义，也是当前控制理论界的热点研究问题之一。

Based on the discrete-time difference equation of the plant,an explicit solution of Diophantine matrix polynomial equations in multivariable generalized predictive control is derived without appealing to Diophantine matrix polynomial equations recursions or iterations,which makes the applications of generalized predictive control much more convenient.

直接利用被控对象的离散差分方程推导出多变量广义预测控制中Diophantine矩阵多项式方程的显式解，从而避免了其递推求解或迭代求解，使广义预测控制的应用更加方便。

You think you're a big shot.

你认为你是一个大人物？

All states are equal, and none can receive special treatment from the federal government.

所有的州都是平等的，任何州都不能获得联邦政府的特别待遇。