观察者差异和观察间差异(intra and inter-observer error)统计方法详述

2012-04-09 MedSci MedSci原创

观察者差异和观察间差异(intra and inter-observer error)一般应用于临床一些数值测量时需要提供的。因为不同观察者测量同一个数值,以及不同观察者两次测量之间,都可能存在差异。如果有这种差异的话,就可能会导致结果的变异。经常会出现在影像学结果的测量,解剖位置的测量,免疫组化/病理的分级等方面。但是这些差异是可以减少,甚至避免的。 因此,一般采用以下方法进行减少误差: (

观察者差异和观察间差异(intra and inter-observer error)一般应用于临床一些数值测量时需要提供的。因为不同观察者测量同一个数值,以及不同观察者两次测量之间,都可能存在差异。如果有这种差异的话,就可能会导致结果的变异。经常会出现在影像学结果的测量,解剖位置的测量,免疫组化/病理的分级等方面。但是这些差异是可以减少,甚至避免的。 因此,一般采用以下方法进行减少误差: (1)成立专家小组或送交参照实验室 (2)试点研究中,比较各种备选方法的差异大小 (3)培训观察者 (4)标化技术与判断标准 (5)估计观察之间的不符合程度 (6)将病人随机分配给观察者 (7)给研究小组指派一名鉴定者。 因此,在正常研究过程中,以及文章写作过程中,需要提供上述内容,以够读者疑问。如果提及上述内容后,一般则不必进行intra and inter-observer error统计分析。如果没有提及,审稿人可能会提问的。 举例1: 随机抽取 5例受试者组织多普勒录像资料 由两位有经验的超声医师 对每例受试对象的6 个室壁 18个心肌节段 共计 90个取样点的PW 频谱图测量 VS VE

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    2022-03-25 ms7406074197409743

    怎么才能看全文

    0

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    2022-03-25 ms7406074197409743

    你好,想学习,很有需求

    0

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    2012-10-23 bsmagic9140
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    2012-05-28 luoyand

    有意义

    0

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    2012-05-22 surilei