Methods Differences of these kits were compared for their sensitivity,specificity,crude agreement and Youden index from detecting 106 serum samples(16 IgM positive,16 IgG positive,and 74 negative).
方法采用敏感性、特异性、总一致性(crude agreement)及约登指数(Youden index)等分析指标作为评判标准,比较16种试剂盒对弓形虫IgG或IgM阳性血清和正常人血清的检测效果。
To control the slope of standard curve in spectrophotometry by using the two kinds of graphics of Youden,we can directly find out the quality of the data,accuracy and precision of the measuring point.
应用尤登双样图对分光光度法进行标准曲线斜率的控制,能简单直观地了解数据质量,看出测点的准确度和精密度,可用同心圆确定测点所代表的标准曲线的斜率是否可接受。
The Youden analysis which is now commonly used in the intercomparison between flowmeter calibration facilities is discussed in this paper.
本文对流量标准装置比对试验中目前普遍使用的尤登分析法(YOUDEN ANALYSIS)进行了详细的讨论,并在此基础上,根据概率论与误差理论,提出了一种基于t分布计算尤登圆半径的新方法。
Objective:Youden graph was applied in HBVpreS1-Ag determination by EIA to perform internal quality control.
5分别计算均值、标准差、变异系数,并绘制尤登质控图和SD-X图。