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专利名称：INTERLABORATORY QUALITY ASSURANCE
PROGRAM
发明人：ANDERSON, Frank, C.,TWEDT, Dean, E.申请号：EP87903008.8申请日：19870330公开号：EP0263870B1公开日：19920819
摘要：An improved procedure for statistically evaluating the performance, precisionand/or accuracy, of at least one analytical instrument in a pool of like or substantially likeinstruments by comparing the performance of the one instrument located in one
laboratory with the performance of like instruments in other laboratories. The procedureincludes the step of quantitatively analyzing a reference or control specimen of knownconstituents by each instrument in the pool and collecting the resultant data from theone instrument in the pool and of the pool instruments. The mean data from the oneinstrument and of the pool instruments are mathematically correlated in a series ofstatistical equations for computing a novel, sensitive index known as the \"InstrumentPerformance Index\" or IPI. This IPI can be tabulated and/or graphically displayed,preferably as a single point in a Cartesian coordinate system, whereby an operator cantell at a glance the performance level with respect to both precision and accuracy of theone instrument in the pool. The ultimate IPI is composed of a novel Coefficient ofVariation Index (CVI), which is a valuable measure of instrument precision, and theStandard Deviation Index (SDI), which is a measure of performance accuracy. Both the CVIand SDI are derived values according to the invention and are capable of tabulation and
display.
申请人：COULTER CORPORATION
地址：600 WEST 20TH STREET; HIALEAH, FL 33010
代理机构：Nettleton, John Victor
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