STRATIFICATION IN NONPARAMETRIC ROC STUDIES

被引:19
作者
SUKHATME, S [1 ]
BEAM, CA [1 ]
机构
[1] MED COLL WISCONSIN,DEPT FAMILY & COMMUNITY MED,MILWAUKEE,WI 53226
关键词
DIAGNOSTIC ABILITY; EMPIRICAL DISTRIBUTION FUNCTION; MANN-WHITNEY STATISTIC; POST-STRATIFICATION; SENSITIVITY; SPECIFICITY;
D O I
10.2307/2533205
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
In many clinical experiments it is clear that external factors can affect the performance of diagnostic tests as these factors influence the distributions of separator variables. The authors investigate how stratification of cases and/or controls can be used in nonparametric receiver operating characteristic (ROC) studies, and develop statistical methods using stratification. The method can be used to simultaneously assess the ability of a diagnostic marker against several types of controls or cases. This allows a new method for the assessment of diagnostic tests.
引用
收藏
页码:149 / 163
页数:15
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