<?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>S0036-36342019000500009</article-id>
<article-id pub-id-type="doi">10.21149/9988</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Intervention for the comprehension of menstrual cycle, body function and pregnancy in adolescents from rural context]]></article-title>
<article-title xml:lang="es"><![CDATA[Intervención para comprender el ciclo menstrual, funcionamiento del cuerpo y embarazo en adolescentes de contexto rural]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campero]]></surname>
<given-names><![CDATA[Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-López]]></surname>
<given-names><![CDATA[Leticia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Jiménez]]></surname>
<given-names><![CDATA[Lizeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Salud Pública Centro de Investigación en Salud Poblacional ]]></institution>
<addr-line><![CDATA[ Cuernavaca]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2019</year>
</pub-date>
<volume>61</volume>
<numero>5</numero>
<fpage>572</fpage>
<lpage>581</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0036-36342019000500009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0036-36342019000500009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0036-36342019000500009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objective: To measure the impact of an intervention on adolescents&#8217; knowledge of the phase of the menstrual cycle with more likelihood of pregnancy and identify its associated factors.  Materials and methods: A quasi-experimental study in two rural communities. Difference-in-differences analyses was performed.  Results: There was a 22.1% average reduction in wrong answers on the phase of the menstrual cycle with more likelihood of pregnancy in the intervention group versus the control group (p&lt;0.001). We founded six factors associated with this knowledge: marry and have children, right to receive education and information on sexual and reproductive health; gender equity; use of the condom; condom self-efficacy; emergency and contraceptive pills.  Conclusion: There is a prevailing need to improve -among sexuality topics- basic knowledge of reproductive biology, while at the same time insisting on the benefits of using birth control methods provided for practicing responsible sexuality.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivo: Medir el efecto de una intervención en el conocimiento de los adolescentes sobre la fase del ciclo menstrual de mayor posibilidad de embarazo e identificar sus factores asociados.  Material y métodos: Estudio cuasiexperimental en comunidades rurales. Se realizó un análisis de diferencias en diferencias.  Resultados: Hubo una reducción promedio de 22.1% de respuestas incorrectas sobre la fase del ciclo menstrual de mayor posibilidad de embarazo en el grupo intervención vs. control (p&lt;0.001). Se encontraron seis factores asociados con este conocimiento: casarse y tener hijos; derecho a recibir educación e información sobre salud sexual y reproductiva; equidad de género; uso correcto del condón; autoeficacia del uso del condón y pastillas anticonceptivas y de emergencia.  Conclusión: Entre las diferentes temáticas de sexualidad, prevalece la necesidad de mejorar los conocimientos básicos sobre biología de la reproducción, insistiendo a la vez sobre los beneficios que conlleva el uso de métodos anticonceptivos para ejercer una sexualidad responsable.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[adolescent]]></kwd>
<kwd lng="en"><![CDATA[sex education]]></kwd>
<kwd lng="en"><![CDATA[menstrual cycle]]></kwd>
<kwd lng="en"><![CDATA[health evaluation]]></kwd>
<kwd lng="en"><![CDATA[rural community]]></kwd>
<kwd lng="es"><![CDATA[adolescente]]></kwd>
<kwd lng="es"><![CDATA[educación sexual]]></kwd>
<kwd lng="es"><![CDATA[ciclo menstrual]]></kwd>
<kwd lng="es"><![CDATA[evaluación en salud]]></kwd>
<kwd lng="es"><![CDATA[comunidad rural]]></kwd>
</kwd-group>
</article-meta>
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