Lin L, Torbeck L D
Baxter Healthcare Corporation, Skokie, IL.
PDA J Pharm Sci Technol. 1998 Mar-Apr;52(2):55-9.
A new statistic, the Coefficient of Accuracy, C(a), has been developed by Lin for methods comparison. When an old measurement method is compared to a new measurement method or if the same method is compared in two laboratories, the Coefficient of Determination, r2, is typically used to measure the relationship. However, r2 only measures the precision of the relationship. The newly developed statistic, C(a), measures the accuracy of the relationship. When these two statistics are combined together, they form a single statistic for both accuracy and precision called the Concordance Correlation Coefficient, rc.
林开发了一种新的统计量——准确度系数C(a)，用于方法比较。当将一种旧的测量方法与一种新的测量方法进行比较，或者在两个实验室中对同一方法进行比较时，通常使用决定系数r2来衡量两者之间的关系。然而，r2仅衡量关系的精密度。新开发的统计量C(a)衡量关系的准确度。当将这两个统计量结合在一起时，它们形成了一个同时衡量准确度和精密度的单一统计量，称为一致性相关系数rc。
