<?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>2631-2581</journal-id>
<journal-title><![CDATA[Revista Ecuatoriana de Neurología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Ecuat Neurol]]></abbrev-journal-title>
<issn>2631-2581</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Médica Ecuatoriana de Neurología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2631-25812023000200039</article-id>
<article-id pub-id-type="doi">10.46997/revecuatneurol32200039</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Propiedades Psicométricas De Un Instrumento De Tamizaje Para Autismo (Itea) En Niños Y Adolescentes Del Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Psychometric Properties Of An Autism Screening Instrument (Itea) In Children And Adolescents From Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López]]></surname>
<given-names><![CDATA[Catalina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval]]></surname>
<given-names><![CDATA[María Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Larrea]]></surname>
<given-names><![CDATA[María de Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tillería]]></surname>
<given-names><![CDATA[Ylonka]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[Byron]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caldas]]></surname>
<given-names><![CDATA[Carol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acosta]]></surname>
<given-names><![CDATA[Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gallárraga]]></surname>
<given-names><![CDATA[Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreta-Herrera]]></surname>
<given-names><![CDATA[Rodrigo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval]]></surname>
<given-names><![CDATA[Verónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez]]></surname>
<given-names><![CDATA[María Belén]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Andina Simón Bolívar  ]]></institution>
<addr-line><![CDATA[Quito ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Católica  ]]></institution>
<addr-line><![CDATA[Ambato ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Consejo Nacional para la Igualdad de Discapacidades  ]]></institution>
<addr-line><![CDATA[Quito ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Ministerio de Educación y Cultura del Ecuador  ]]></institution>
<addr-line><![CDATA[Quito ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2023</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>39</fpage>
<lpage>48</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S2631-25812023000200039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S2631-25812023000200039&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S2631-25812023000200039&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este estudio explora la validez factorial del Instrumento de Tamizaje del Espectro Autista-ITEA para identificación de autismo en niños y adolescentes escolares de Ecuador. El estudio psicométrico analiza la validez y fiabilidad, así como la consistencia interna de los ítems de la escala. La muestra consistió de 848 personas autistas y 350 sin esta condición, que asisten al sistema educativo formal en edades comprendidas entre los 4 a 17 años de edad. El Análisis Factorial Confirmatorio muestra que el modelo de ajuste del ITEA se comporta de manera adecuada para la población ecuatoriana, corroborado por medio de un modelo de cuatro factores de primer orden y un factor aglutinador general de segundo orden con 32 ítems, de hecho, los indicadores de ajuste absoluto, relativos y basados en la no centralidad así lo confirman. Además, de que la escala es altamente fiable en términos de consistencia interna con &#969;= .92 [.91 - .93], ya que permite obtener mayor precisión en la evaluación del constructo estudiado. En conclusión, las evidencias de validez factorial y fiabilidad muestran que el ITEA en su modelo estructural se ajusta adecuadamente para el tamizaje de autismo en escolares de 4 a 17 años del Ecuador. Según el Support Vector Machines (SVM), que permite conocer la exactitud de cada ítem evaluado, el conjunto de 42 ítems llegó a un 89.04%. El análisis mediante la Request for Evidence (RFE) mostró que, para aumentar el nivel de exactitud del instrumento, 31 ítems superaron el valor global. En cuanto a las 7 categorías (lenguaje, comunicación, competencias sociales, afectividad, procesamiento de la información, inflexibilidad y sensopercepción) evaluadas, según el algoritmo SVM con kernel &#8220;rbf&#8221; se obtuvo un valor de 89.387%. Datos que muestran la capacidad del ITEA para mostrar características específicas para identificar el autismo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This study explores factorial validity of the Autism Spectrum Screening Test (ITEA) for the identification of autism in schooled children and adolescents in Ecuador. The psychometric study analyzes the validity and reliability, as well as internal consistency of the elements of the scale. The sample consisted of 848 autistic people, and 350 non-autistic, of ages between 4 and 17 years old, who attended regular schools. The Confirmatory Factor Analysis shows that the ITEA adjustment model behaves adequately for the Ecuadorian population, corroborated by means of a model of four first-order factors and a second-order general agglutinating factor with 32 items, in fact, the absolute, relative, and non-centrality-based fit indicators confirm this. In addition, the scale is highly reliable in terms of internal consistency with &#969;= .92 [.91 - .93], since it allows obtaining greater precision in the evaluation of the studied construct. It can be concluded that evidence of factorial validity and reliability show that the ITEA, in its structural model, is adequately adjusted for the screening of autism in schooled children with ages between 4 to 17 years old in Ecuador. According to Support Vector Machines (SVM), which allows information regarding the accuracy of each evaluated item, the set of 42 items reached 89.04% Analysis using the Request for Evidence test (RFE) showed that, in order to increase the accuracy level of ITEA, 31 items exceeded the global value. Regarding the 7 categories evaluated (language, communication, social skills, affectivity, information processing, inflexibility, and sensory perception), a value of 89.387% was obtained, according to the SVM algorithm with &#8220;rbf&#8221; kernel. The data shows the ability of ITEA to show specific characteristics to identify autism.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[autismo]]></kwd>
<kwd lng="es"><![CDATA[fiabilidad]]></kwd>
<kwd lng="es"><![CDATA[tamizaje]]></kwd>
<kwd lng="es"><![CDATA[validez]]></kwd>
<kwd lng="es"><![CDATA[Ecuador]]></kwd>
<kwd lng="es"><![CDATA[población infantil y adolescente.]]></kwd>
<kwd lng="en"><![CDATA[autism]]></kwd>
<kwd lng="en"><![CDATA[reliability]]></kwd>
<kwd lng="en"><![CDATA[screening]]></kwd>
<kwd lng="en"><![CDATA[validity]]></kwd>
<kwd lng="en"><![CDATA[Ecuador]]></kwd>
<kwd lng="en"><![CDATA[child and adolescent population.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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