Analysis of external quality assessment results for quality indicators of interlaboratory comparison rate from 2016 to 2023
Objective To understand the situation of interlaboratory comparison for without external quality assessment(EQA)test by analyzing the results of quality indicators related to interlaboratory comparison rate of EQA from 2016 to 2023,in order to provide some suggestions for comparison.Methods The National Center for Clinical Laboratories organized 31 centers of provinces(autonomous re-gions and municipalities directly)to launch a synchronous Quality Indicators(QIs)-EQA program.The data were reported via devel-oped online EQA system.The essential information of the clinical laboratories and the data of quality indicators of interlaboratory com-parison rate were collected.The median(lower quartile,upper quartile)M(Q1,Q3)of the interlaboratory comparison rate was calcu-lated,and the quality level of the laboratory was evaluated by sigma measurement,and the statistics of the classification(tertiary and secondary hospitals)were carried out to understand the differences in the interlaboratory comparison rate among different hospital grades.Mann-Whitney U test was used to compare the two groups(different years or different hospital grades),and P＜0.05(α=0.05)indicated that the difference was statistically significant.Results The number of return laboratories increased from 6 701 in 2016 to 11 579 in 2023.The national median results showed that the interlaboratory comparison rate had been increasing year by year(excluding 2021),from 1.6％in 2016 to 3.8％in 2023.The median grading results showed that the interlaboratory comparison rate of tertiary hospitals was higher than that of secondary hospitals.In 2023,the interlaboratory comparison rate was 10.3％for tertiary hospi-tals and 2.3％for secondary hospitals.The results of all the years were below 3σ level.The median interlaboratory comparison rate of tertiary hospitals in various regions showed that Shanghai,Ningxia,and Sichuan exhibited higher median.The median interlaboratory comparison rate of secondary hospitals showed that Shanghai,Sichuan,and Hainan exhibited higher median.Conclusion At present period,the interlaboratory comparison rate has still been low in those laboratories without EQA tests.Therefore,the medical laborato-ries without EQA tests should strengthen interlaboratory comparisons to verify the reliability of their results.
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万方数据
