Two transformation models for estimating an ROC curve derived from continuous data
Two transformation models for estimating an ROC curve derived from continuous data
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DOI：
10.1080/02664760050076443
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发表时间：
2000-07-01
影响因子：
1.5
通讯作者：
Hall, WJ
中科院分区：
文献类型：
--
作者：
Zou, KH;Hall, WJ
A receiver operating characteristic (ROC) curve is a plot of two survival functions, derived separately from the diseased and healthy samples. A special feature is that the ROC curve is invariant to any monotone transformation of the measurement scale. We propose and analyse semiparametric and parametric transformation models for this two-sample problem. Following an unspecified or specified monotone transformation, we assume that the healthy and diseased measurements have two normal distributions with different means and variances. Maximum likelihood algorithms for estimating ROC curve parameters are developed. The proposed methods are illustrated on the marker CA125 in the diagnosis of gastric cancer.
