论文标题
调查不同精度的方法之间的一致性
Investigating the agreement between methods of different precision
论文作者
论文摘要
所谓的平淡的altman图通常研究了测量方法之间的一致性，表明差异是否与测量的大小无关。但是，这种分析假定这两种方法都具有相同的精度。如果不是，则该图可能显示出由精度差异而不是实际依赖测量大小引起的错误趋势。我们建议对平淡的altman图进行修改，以便绘制差异与测量的反相反加权平均值，而不是其平均值。这项研究表明，这种修饰消除了对精度差异的依赖。
Agreement between measurement methods is commonly investigated by a so-called Bland-Altman plot showing if the difference is independent of the size of the measurement. However, such analysis assumes that both methods have the same precision. If not, the plot may show a false trend caused by the difference in precision and not by an actual dependence on the size of the measurement. We suggest a modification of the Bland-Altman plot such that the differences are plotted against an inverse-variance weighted average of the measurements rather than their mean. This study shows that such modification removes the dependence on difference in precision.
