Error Grid Analysis of Improving the Glucose Meter with the Taguchi Loss Function

VernacularTitle:利用太古奇(Taguchi)损失函数改进血糖仪的误差网格分析
Author: Yu-Zhu HUANG ¹ ; Wei WANG ; Hai-Jian ZHAO ; Zhi-Guo WANG
Author Information

1. 北京医院国家老年医学中心
Keywords: taguchi loss function; mean absolute relative deviation; parkes error grid; surveillance error grid
From: Journal of Modern Laboratory Medicine 2018;33(1):158-160
CountryChina
Language:Chinese
Abstract: Glucose meters often have similar performance when compared by error grid analysis.This is one reason that other statistics such as mean absolute relative deviation (MARD) are used to further differentiate performance.The problem with MARD is that too much information is lost.But additional information is available within the A zone of an error grid by using the Taguchi loss function.Applying the Taguchi loss function gives each glucose meter difference from reference a value ranging from 0 (no error) to 1 (error reaches the A zone limit).Values are averaged over all data which provides an indication of risk of an incorrect medical decision.This allows one to differentiate glucose meter performance for the common case where meters have a high percentage of values in the A zone and no values beyond the B zone.Examples are provided using simulated data.