Subject-centered free-response ROC (FROC) analysis.

Subject-centered free-response ROC (FROC) analysis.
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以受试者为中心的自由响应 ROC (FROC) 分析。

DOI:
10.1118/1.4799843
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发表时间:
2013
期刊:
影响因子:
3.8
通讯作者:
Gur,David
Gur,David
中科院分区:
医学3区
文献类型:
--
作者:
Bandos,AndriyI;Rockette,HowardE;Gur,David

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目的:开发一种估计以受试者为中心的自由反应接收器工作特性(FROC)曲线的方法,以提供关于诊断系统的检测定位特性的以患者为中心的推断。方法:作者检验了传统的以靶点为中心的FROC曲线的性质,并证明在诊断性能与受试者上的靶点总数相关的情况下,从患者可能受益的角度来看,这可能导致不充分的推断。遵循其他应用中以患者为中心的方法的解决方案,作者定义了以受试者为中心的FROC曲线,并将其公式发展为协变量调整的FROC曲线。结果:一种简单易行的估计以受试者为中心的FROC曲线及其总体指标的方法可表述为一种分层FROC分析方法。作者证明,当诊断性能与目标的数量相关时,具有明显优越的以目标为中心的特征的诊断系统(传统方法)从以对象为中心的角度来看实际上可能较差。作者表明,在一些临床合理的条件下,结果的不一致程度可能是很大的。一个实际观察者绩效研究的例子说明了所开发的方法与传统分析得出的结论相矛盾的自然环境。结论:作者开发了以受试者为中心的FROC曲线,其总体指数提供了从对患者潜在益处的角度进行相关推断的工具。
Purpose:To develop an approach of estimating subject‐centered free‐response receiver operating characteristic (FROC) curve for providing patient‐centered inferences regarding detection‐localization characteristics of a diagnostic system.Methods:The authors examine properties of the conventional, target‐centered, FROC curve and demonstrate that in scenarios where the diagnostic performance correlates with the total number of targets on a subject, it may lead to inadequate inferences from the perspective of possible benefits to a patient. Following solutions to patient‐centered approaches in other applications, the authors define a subject‐centered FROC curve and develop its formulation as a covariate‐adjusted FROC curve. The authors also conduct a numerical study illustrating the relative properties of the conventional and subject‐centered approach and provide an example.Results:A simple‐to‐implement approach for estimating the subject‐centered FROC curve and its overall index can be formulated as a type of stratified FROC analysis. The authors demonstrate that when diagnostic performance is associated with the number of targets, the diagnostic system with apparently superior target‐centered characteristics (conventional approach) can be actually inferior from the subject‐centered perspective. The authors show that under some clinically reasonable conditions the magnitude of disagreement in results could be substantial. An example from an actual observer performance study illustrates the natural setting where the developed approach would be relevant and lead to conclusions that are contradictory to those obtained from conventional analysis.Conclusions:The authors developed a subject‐centered FROC curve and its overall index provides tools for inferences that may be relevant from a perspective of potential benefits to a patient.
DOI: 10.1016/0014-4835(88)90021-8
发表时间: 1988-07-01
影响因子: 3.4
作者:
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发表时间: 1981
影响因子: 3.4
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发表时间: 1982
期刊: Ophthalmology
影响因子: 13.7
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影响因子: --
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