Criterion | Description | Performance metric |
---|---|---|
A | Correlation between adjusted spot analyte concentrations and UFR. | Weaker correlations indicating good performance. |
B | Correlation between adjusted spot analyte concentration and an independent measure of internal dose, e.g. analyte concentration in blood. | Stronger correlations indicating good performance. |
C | Correlation of spot analyte concentrations with analyte excretion over 24Â hr or composite 24Â hr concentrations. | Closer agreement/lower variation in spot samples indicating good performance. |
D | Correlation of spot analyte concentration with an independent measure of/proxy for external exposure e.g. drinking water analyte concentration. | Stronger correlations indicating good performance. |