Abstract
Objective: “Rapid screening, targeted sampling, objective test” is an efficient test model. The factors affecting the efficiency include false screening rate, missing rate and rapid screening time. However, only missing rate and accuracy have been used as technical requirements to evaluate rapid screening method. In this study, efficiency was regarded as evaluation index of quick testing method. Method: The evaluation model of quick testing efficiency was established by comparing time of routine testing and quick testing. By simulation calculation, the effect factors such as rapid screening time, false screening rate, missing rate and defective rate were analyzed. Results: The calculation formula of efficiency was derived. Simulation results showed that the lower defective rate, the higher efficiency; the smaller missing rate, false screening rate, or screening time, the higher efficiency and the degree of improving efficiency is related to defective rate; sometimes, the screening time is the most important factor affecting the efficiency. In certain cases, if the false screening rate or missing rate is 50%, the efficiency can be increased by more than 10 times. Conclusions: Taken together, this study highlighted a role of efficiency which functioned as an index to evaluate rapid screening. Quick testing efficiency evaluation model can be used for the calculation efficiency, and can be used to analysis the relationship between efficiency and the influence factors, and can provide the theoretical foundation for rapid screening method development and evaluation.
Highlights
Food and drug market circulation is huge but regulatory supervision is limited
The efficiency is 11.11 at defective rate is 10%. It means false screening rate or missing rate can be more than the technical requirements (20%)
The secondary aim of the study was to find the relationship between quick testing efficiency and impact factors such as missing rate, false testing rate, screening time and defective rate
Summary
Food and drug market circulation is huge but regulatory supervision is limited. WHO put forward the concept of fighting against “substandard/spurious/falsely-labelled/falsi-. “Rapid screening, targeted sampling, objective test” is an efficient test pattern [1] [2]. In 2010, food and drug administration carried out special supervision and sampling inspection for health food that was added illegal chemicals. Rapid screening 3000 batches of samples and 165 batches of them turned out to be positive. There are 98 batches of sample proved positive. Compared to test 3000 batches and many projects, efficiency is improved obviously [3]
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