<?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>0138-600X</journal-id>
<journal-title><![CDATA[Revista Cubana de Obstetricia y Ginecología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Obstet Ginecol]]></abbrev-journal-title>
<issn>0138-600X</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-600X2019000200002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores de riesgo para el cáncer de mama]]></article-title>
<article-title xml:lang="en"><![CDATA[Risk Factors for Breast Cancer]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Milena Bedoya]]></surname>
<given-names><![CDATA[Astrid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Arcila]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardona-Arias]]></surname>
<given-names><![CDATA[Jaiberth Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia Escuela de Microbiología ]]></institution>
<addr-line><![CDATA[ Medellín]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>45</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-600X2019000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-600X2019000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-600X2019000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: El cáncer de mama es el más común entre las mujeres, sus factores de riesgo no han sido sistematizados desde un enfoque amplio de las revisiones publicadas.  Objetivo:  Sistematizar los factores de riesgo del cáncer de mama a partir de publicaciones de estudios de casos y controles en el período 2008-2018.  Métodos:  Revisión sistemática de la literatura con base en la aplicación de un protocolo exhaustivo y reproducible, siguiendo las fases de identificación, tamización, elección e inclusión de la guía PRISMA. Se realizó síntesis cualitativa con proporciones e intervalos de confianza del 95 %.  Resultados: Se analizaron 298 estudios, en 2 927 342 mujeres, la mayoría de México (2 000 835). Los países con mayor frecuencia de publicación fueron EE.UU. (20,9 %) y China (10,8 %). El grupo de factores de riesgo más estudiado fue la dieta (26,6 %), los factores reproductivos (14,8 %) y el estilo de vida (9,1 %). Los menos estudiados son los biológicos, solo uno abordó este tipo de factor reportando una fuerte asociación de la seroconversión IgG en citomegalovirus con el desarrollo de cáncer de mama. Los tres factores que registraron mayor fuerza de asociación fueron la obesidad, los factores psicosociales y el citomegalovirus.  Conclusiones: Se halló una amplia diversidad de factores de riesgo, algunos estudios con diseños rigurosos para establecer asociaciones etiológicas sólidas y otros con un desarrollo investigativo incipiente o problemas metodológicos que impiden consolidar hipótesis causales y por tanto la posibilidad de intervenir en los principales desencadenantes de la aparición de la enfermedad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Breast cancer is most common among women; its risk factors have not been outlined from a broad approach of published reviews.  Objective:  To outline the risk factors of breast cancer from publications of case-control studies from 2008 to 2018.  Methods:  A systematic review of the literature based on the application of comprehensive and reproducible protocol, following identification, screening, selection and inclusion phases of PRISMA guide. Qualitative synthesis was performed with proportions and 95 % confidence intervals.  Results:  298 studies were analyzed in 2,927,342 women, mostly from Mexico (2 000 835). The countries with highest frequency of publication were USA. (20.9 %) and China (10.8 %). The most studied groups of risk factors were diet (26.6 %), reproductive factors (14.8 %) and lifestyle (9.1 %). The least studied are the biological ones. Only one approached this type of factor, reporting a strong association of IgG seroconversion in cytomegalovirus with the appearance of breast cancer. The three factors that registered the greatest strength of association were obesity, psychosocial factors and cytomegalovirus.  Conclusions:  We found a wide diversity of risk factors, some rigorous-design studies to establish solid etiological associations and others with initial research development or methodological problems that prevent consolidating causal hypotheses and therefore the possibility of intervening in the main triggers for the appearance of the disease.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[cáncer de mama]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[estudios de casos y controles]]></kwd>
<kwd lng="es"><![CDATA[metaanálisis]]></kwd>
<kwd lng="en"><![CDATA[breast cancer]]></kwd>
<kwd lng="en"><![CDATA[risk factors]]></kwd>
<kwd lng="en"><![CDATA[case-control studies]]></kwd>
<kwd lng="en"><![CDATA[meta analysis]]></kwd>
</kwd-group>
</article-meta>
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