Summary of the results from the ‘system’ validation: inter-operator imprecision, expressed as coefficient of variation.

a three iodine levels were used (15.0, 29.6, 59.1 mg/kg) and the three CV’s are given in the order of increasing iodine concentration;b three iodine levels were used (20.0, 47.5, 90.4 mg/kg) and the three CV’s are given in the order of increasing iodine concentration;c outside of measuring range for more than one measurement and thus, n/d means not determined.d For the saltPAD, three types of interpretation of the results on the cards were done: interpretation by the operator, by an expert reader (a person from the device developer) and an image analysis software; the index provides the information which readings were used.Summary of the results from the ‘system’ validation: inter-operator imprecision, expressed as coefficient of variation.

a. 本实验设置了三个碘浓度水平（15.0、29.6、59.1 mg/kg），三个变异系数（coefficient of variation, CV）按碘浓度递增的顺序给出；
b. 本实验设置了三个碘浓度水平（20.0、47.5、90.4 mg/kg），三个CV值按碘浓度递增的顺序给出；
c. 多次测量超出检测量程范围，因此n/d表示未测定（not determined）；
d. 针对saltPAD，需对试卡上的检测结果开展三类判读：操作人员判读、专家判读（来自设备开发商的专业人员）以及图像分析软件判读；该下标用于标注本次分析所采用的读数来源。
本次"系统"验证的结果汇总：以CV表示的操作者间不精密度。