<?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>0036-3634</journal-id>
<journal-title><![CDATA[Salud Pública de México]]></journal-title>
<abbrev-journal-title><![CDATA[Salud pública Méx]]></abbrev-journal-title>
<issn>0036-3634</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud Pública]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0036-36342021000400478</article-id>
<article-id pub-id-type="doi">10.21149/12257</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Prevalencia mensual de trastorno de ansiedad generalizada durante la pandemia por Covid-19 en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Monthly prevalence of generalized anxiety disorder during the Covid-19 pandemic in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gaitán-Rossi]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Hernández]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vilar-Compte]]></surname>
<given-names><![CDATA[Mireya]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Teruel-Belismelis]]></surname>
<given-names><![CDATA[Graciela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Iberoamericana Instituto de Investigaciones para el Desarrollo con Equidad ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>63</volume>
<numero>4</numero>
<fpage>478</fpage>
<lpage>485</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0036-36342021000400478&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0036-36342021000400478&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0036-36342021000400478&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivo:  Estimar la prevalencia de ansiedad generalizada (GAD, por sus siglas en inglés) entre abril y junio de 2020.  Material y métodos:  Diseño transversal repetido basado en la Encovid-19, una serie de encuestas telefónicas mensuales con muestras representativas de México (N= 833-1 674). El cuestionario incluye la escala GAD-2 y en julio se añadió la GAD-7; se examinó su validez interna con análisis factorial confirmatorio y su validez concurrente con variables sociodemográficas. Con la GAD-7 como criterio, se calculó la validez predictiva de la GAD-2. Se estimó la prevalencia mensual con la GAD-2.  Resultados:  La GAD-7 y la GAD-2 son confiables y válidas. La GAD-2 tiene una sensibilidad de 0.87 y una especificidad de 0.90. La prevalencia mensual se mantuvo alta y estable, entre 30.7 y 32.6%. El GAD se concentró en mujeres, personas desocupadas y de bajo nivel socioeconómico.  Conclusiones:  El GAD es un problema de salud pública que se agravó con la pandemia por Covid-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objective:  Estimate the prevalence of generalized anxiety disorder (GAD) from April to June 2020.  Materials and methods:  Repeated cross-sections design based in the Encovid-19, a series of monthly mobile surveys with representative samples of Mexico (N= 833-1 674). The questionnaire includes the GAD-2 scale, and, in July, the GAD-7 scale was added; we examined its internal validity with confirmatory factor analysis and its concurrent validity with sociodemographic variables. Using GAD-7 as criterion, we analyzed the predictive validity of the GAD-2. We estimated the monthly prevalence with the GAD-2.  Results:  The GAD-7 and the GAD-2 are reliable and valid. The GAD-2 has a sensitivity of 0.87 and a specificity of 0.90. The monthly prevalence remains high and stable, between 30.7 and 32.6%. GAD concentrated in women, unemployed and persons with low socioeconomic status.  Conclusions:  GAD is a public health problem that worsened during the Covid-19 pandemic.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ansiedad]]></kwd>
<kwd lng="es"><![CDATA[GAD]]></kwd>
<kwd lng="es"><![CDATA[Covid-19]]></kwd>
<kwd lng="es"><![CDATA[validez]]></kwd>
<kwd lng="es"><![CDATA[monitoreo]]></kwd>
<kwd lng="en"><![CDATA[anxiety]]></kwd>
<kwd lng="en"><![CDATA[GAD]]></kwd>
<kwd lng="en"><![CDATA[Covid-19]]></kwd>
<kwd lng="en"><![CDATA[validity]]></kwd>
<kwd lng="en"><![CDATA[monitoring]]></kwd>
</kwd-group>
</article-meta>
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