<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0003-3170</journal-id>
<journal-title><![CDATA[Angiología]]></journal-title>
<abbrev-journal-title><![CDATA[Angiología]]></abbrev-journal-title>
<issn>0003-3170</issn>
<publisher>
<publisher-name><![CDATA[Arán Ediciones S.L.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0003-31702023000300006</article-id>
<article-id pub-id-type="doi">10.20960/angiologia.00475</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Validación de test diagnósticos (segunda parte). Test cuantitativos]]></article-title>
<article-title xml:lang="en"><![CDATA[Validation of diagnostic tests (part II). Quantitative tests]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martín-Conejero]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico San Carlos  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>75</volume>
<numero>3</numero>
<fpage>181</fpage>
<lpage>185</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S0003-31702023000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S0003-31702023000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S0003-31702023000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En esta segunda parte sobre la validación de los test diagnósticos vamos a estudiar cómo analizar la bondad de los test diagnósticos cuantitativos. El análisis de estos test se realiza a partir de las curvas ROC (Receiver Operating characteristic Curve). Constituye un método para determinar la exactitud diagnóstica de test que utilizan escalas continuas. A partir de estas curvas analizaremos dos conceptos: la AUC (Area Under Curve) y el índice de Youden, que nos ayudará a una mejor interpretación de la validez de una prueba diagnóstica y su punto de corte.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this second part on the validation of diagnostic tests we are going to study how to analyze the goodness of quantitative diagnostic tests. The analysis of these tests is performed from the ROC curves (Receiver Operating characteristic Curve). It constitutes a method to determine the diagnostic accuracy of tests that use continuous scales. From these curves we will analyze two concepts: the AUC (Area Under Curve) and the Youden index, which will help us to better interpret the validity of a diagnostic test and its cut-off point.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Test cuantitativo]]></kwd>
<kwd lng="es"><![CDATA[Curva ROC]]></kwd>
<kwd lng="es"><![CDATA[AUC]]></kwd>
<kwd lng="es"><![CDATA[Índice de Youden]]></kwd>
<kwd lng="en"><![CDATA[Cuantitative test]]></kwd>
<kwd lng="en"><![CDATA[ROC curve]]></kwd>
<kwd lng="en"><![CDATA[AUC]]></kwd>
<kwd lng="en"><![CDATA[Youden's J statistic]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
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<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
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<given-names><![CDATA[A]]></given-names>
</name>
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<source><![CDATA[Angiología]]></source>
<year>2022</year>
<volume>75</volume>
<numero>2</numero>
<issue>2</issue>
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<source><![CDATA[Front Cardiovasc Med]]></source>
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</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="book">
<collab>Manual CTO</collab>
<source><![CDATA[Metodología Básica de la Investigación Clínica]]></source>
<year>2019</year>
<publisher-loc><![CDATA[Madrid ]]></publisher-loc>
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</article>
