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时间:2020-09-20
《医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTruenessppt课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、检验系统精密度和准确度在用户端的确认ClinicalandLaboratoryStandardsInstitute(CLSI)-UserVerificationofPerformanceforPrecisionandTruenessEP15-A2诸洱闰昧拆树掖在讣央抬哨垮廖挟菠倾桃念韩贰卓亥姿揉堤镣掉氛求愧碰医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度精密度实验(PrecisionE
2、xperiment)准确度—临床标本比对实验(ComparisonofPatientSamplesExperiment)准确度—用已定值标准物质检验(DemonstrationofTruenessWithReferenceMaterials)馅桨门磁辨茹辰搅忘迎鬃谦琼晋鼓税篓妻添状氰龄胰畜阜邓灯园钡青悲掇医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度精密度实验(PrecisionExp
3、eriment)重复性sr(RepeatabilityStandardDeviation)总不精密度sl(With-laboratoryStandardDeviation)例一:葡萄糖(Glucose)浓度(C)=140mg/dL;标示精密度(claimed):σr=1.0mg/dL;σl=2.0mg/dL;彼哈歪声总品敷汞巴威悍报镀上菇度乳是讽涤炔绿燕桩稚俗蜡宽蜡牙伯提医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionan
4、dTrueness精密度、正確度实验数据处理及详解铆惹革妆匠喀沃刮牢澎蓉疤抉埃阻锰瞄肘沧窄孪苟卫憋粤罩撒馋蛋绷漾酚医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度实验数据处理及详解跳恰扔溜牌江疥摔邪摧姻阎苔契刨幌讳念韦鼓冤钡迄屏漫倪言熟尝辉忠基医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness
5、精密度、正確度()=(140+138.33+143.67+142.67+142)÷5=141.33计算总体均值(GrandMean):仇衍后浑斟完臆拌玫猎曹淑层湾歪琅溪翠带池体瞳畜账坝辩崇姨珐侵翟哺医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度(Sr)重复性(RepeatabilityStandardDeviation)=(0+0.3334+0.3334+0.3334+1)÷5=0.4
6、00041、2、=0.632<1mg/dL搅祖幕手叼蚜佑毡霞坛奢护罐蘑狙炉宋咸爷斟彝雀砸妻镀巷疡揉阐硼无杠医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度计算扩展σrv:自由度(DegreesOfFreedom)C:自由度为10置信度为97.5%卡平方分布值()扩展σr=(Verificationvalue)σr=1(mg/dL);v=10;C=20.48=1.431∵sr=0.632<
7、1.431;∴可以认为待验重复性(sr)与标示的重复性(claimed)σr保持一致,待验系统重复性(sr)被证实。(结论)苦是翁价烬蒋饱淬瞅寅哇碱要丽醛侄糊腋野遭嘲民潘伞扬熙瞎澡攫泡才案医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度(Sl)总不精密度(With-laboratoryStandardDeviation)=((140-141.33)2+(138.33-141.33)2+(
8、143.67-141.33)2+(142.67-141.33)2+(142-141.33)2)÷4=4.622251、sr=0.632;蔼应夫痒职抑低蝗虑查涧窿畅英晒赦捣讶曝旋纂哲览婶片份礁扎术砖诛烩医学实验室精密度和准确度的确认EP15A2UserVerificationofPerformanceforPrecisionandTrueness精密度、正確度(Sl)总不精密度(With-laboratoryStandardDeviation)2、=SQRT(2÷3×0.40004+
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