The quality of products manufactured or procured by organizations is an important aspect of their survival in the global market. The quality control processes put in place by organizations can be resource-intensive bu...The quality of products manufactured or procured by organizations is an important aspect of their survival in the global market. The quality control processes put in place by organizations can be resource-intensive but substantial savings can be realized by using acceptance sampling in conjunction with batch testing. This paper considers the batch testing model based on the quality control process where batches that test positive are re-tested. The results show that re-testing greatly improves the efficiency over one stage batch testing based on quality control. This is observed using Asymptotic Relative Efficiency (ARE), where for values of </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> computed ARE > 1 implying that our estimator has a smaller variance than the one-stage batch testing. Also, it was found that the model is more efficient than the classical two-stage batch testing for relatively high values of proportion.展开更多
目的分析高胆红素血症患儿新生儿溶血病(hemolytic disease of newborn,HDN)血清学检测结果并探讨与其相关因素之间的关系。方法对796例高胆红素血症患儿的血样进行新生儿溶血三项试验,并分析HDN阳性率与血型、送检日龄、血红蛋白水平...目的分析高胆红素血症患儿新生儿溶血病(hemolytic disease of newborn,HDN)血清学检测结果并探讨与其相关因素之间的关系。方法对796例高胆红素血症患儿的血样进行新生儿溶血三项试验,并分析HDN阳性率与血型、送检日龄、血红蛋白水平及血清总胆红素值等因素的关系。结果 796例高胆红素血症患儿中HDN患儿184例(23.12%),其中ABOHDN 176例,Rh-HDN 8例。796例患儿血样检测结果中游离试验阳性180例(22.61%),释放试验阳性184例(23.12%),直抗试验阳性140例(17.59%)。B型血患儿HDN阳性率高于A型血患儿,差异有统计学意义(χ2=10.30,P<0.05)。HDN阳性率与送检日龄密切相关,且日龄越大阳性检出率越低,差异有统计学意义(P<0.05)。184例HDN阳性患儿血红蛋白水平及血清总胆红素值与HDN患儿差异有统计学意义(P<0.05)。结论高胆红素血症患儿HDN阳性率较高,应尽早进行溶血三项试验,并可结合血红蛋白水平及血清总胆红素值来提高HDN检出率。展开更多
文摘The quality of products manufactured or procured by organizations is an important aspect of their survival in the global market. The quality control processes put in place by organizations can be resource-intensive but substantial savings can be realized by using acceptance sampling in conjunction with batch testing. This paper considers the batch testing model based on the quality control process where batches that test positive are re-tested. The results show that re-testing greatly improves the efficiency over one stage batch testing based on quality control. This is observed using Asymptotic Relative Efficiency (ARE), where for values of </span><i><span style="font-family:Verdana;">p</span></i><span style="font-family:Verdana;"> computed ARE > 1 implying that our estimator has a smaller variance than the one-stage batch testing. Also, it was found that the model is more efficient than the classical two-stage batch testing for relatively high values of proportion.
