• 作者：José ; Antonio Ruiz-Maciá ; ^a ; ^{ruizmacia@gmail.com} ; Cristina Bailé ; n-Ruiz^b ; Enrique Martinez-Barba^c ; Vicente Ruiz-Cotorruelo^d ; Luis Andreu-Sober^e ; Belé ; n Ferri-Ñ ; iguez^c ; José ; Manuel Navarro-Rodriguez^f ; Eliseo Garrido-Aracil^d ; Miguel Á ; ngel Morcillo-Ró ; denas^f ; Joaqu&#237 ; n Sola-Pé ; rez^c
• 关键词：Aná ; lisis de costes ; Sensibilidad ; Especificidad ; Prueba diagnó ; stica
• 刊名：Revista Espa?ola de Patolog¨ªa
• 出版年：2012
• 出版时间：October-December, 2012
• 年：2012
• 卷：45
• 期：4
• 页码：224-229
• 全文大小：398 K

Objective

We present a graphical method for analyzing the cost related to false positive (FP) and false negative (FN) results of diagnostic tests.

Material and methods

We created a function relating cost to the sensitivity (S) and specificity (E) of the diagnostic test. Isocost straight lines were obtained, the gradient of which represents the ratio of false positive cost/false negative cost. The various diagnostic tests are plotted in the ROC space as the point (1-E, S).

Results

Isocost straight lines allowed us to see if the cost of a new test is lower or the same as previous tests.

Conclusions

Graphical analysis of the cost of a diagnostic test is helpful in deciding whether or not to introduce new diagnostic tests.