<?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>2520-9825</journal-id>
<journal-title><![CDATA[Revista Científica de Salud UNITEPC]]></journal-title>
<abbrev-journal-title><![CDATA[Revista UNITEPC]]></abbrev-journal-title>
<issn>2520-9825</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnica Privada Cosmos]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2520-98252024000200019</article-id>
<article-id pub-id-type="doi">10.36716/unitepc.v11i2.2.00</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Distribución de nacimientos por edad gestacional y grupo etario materno: un estudio sobre la prematuridad y su grado.]]></article-title>
<article-title xml:lang="en"><![CDATA[Distribution of births by gestational age and maternal age group: a study on prematurity and its degree.]]></article-title>
<article-title xml:lang="pt"><![CDATA[Distribuição de nascimentos por idade gestacional e faixa etária materna: um estudo sobre prematuridade e seu grau.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Mármo]]></surname>
<given-names><![CDATA[Jenny Cintia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pinto Velásquez]]></surname>
<given-names><![CDATA[Gloria Mavel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mamani Rosas]]></surname>
<given-names><![CDATA[Ana Maria]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Servicio Departamental de Salud (SEDES)  ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Técnica Privada Cosmos Centro de Investigación de Salud Pública UNITEPC (CISPU) ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica Privada Cosmos Centro de Investigación de Salud Pública UNITEPC (CISPU) ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<pub-date pub-type="pub">
<day>31</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>31</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>11</volume>
<numero>2</numero>
<fpage>19</fpage>
<lpage>26</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S2520-98252024000200019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S2520-98252024000200019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S2520-98252024000200019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen.  Introducción:  Los nacimientos prematuros, que afectan al 11% de los nacimientos a nivel mundial, representan un desafío significativo para la salud pública debido a los riesgos asociados. La edad materna es un factor determinante, con adolescentes y mujeres mayores en mayor riesgo de prematuridad. Este estudio analiza la distribución de nacimientos según la edad gestacional y materna en Bolivia, identificando patrones locales y diferencias entre grupos etarios. Metodología: Se llevó a cabo un estudio observacional, retrospectivo y transversal basado en 58,098 certificados de nacidos vivos registrados entre 2022 y 2023, excluyendo datos incompletos. Se analizaron variables como la edad gestacional (prematuro, a término, postérmino), el grado de prematuridad (extremo, muy prematuro, moderado/tardío) y la edad materna (adolescente, reproductiva, avanzada). El análisis estadístico incluyó la prueba de chi-cuadrado y se realizó con el software SPSS, identificando diferencias significativas en la tasa de prematuridad entre grupos. Resultados: Del total de nacimientos analizados, el 6.3% fueron prematuros, el 93.6% a término y el 0.1% postérmino. Entre los prematuros, el 3.6% fueron extremos, el 7.7% muy prematuros y el 88.7% moderados o tardíos. La prueba chi-cuadrado (&#967;²: 81.41; p &lt; 0.001) mostró diferencias significativas en la prematuridad según la edad materna, resaltando el mayor riesgo en adolescentes y mujeres mayores. Discusión: Los resultados subrayan la relación entre la edad materna y la prematuridad. Adolescentes y mujeres mayores enfrentan un mayor riesgo, asociado a complicaciones y desigualdades en el acceso a cuidados prenatales. Estos hallazgos enfatizan la importancia de políticas preventivas dirigidas a estos grupos, mejorando la atención prenatal para reducir riesgos y optimizar los resultados perinatales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract.  Introduction:  Preterm births, affecting 11% of global births, represent a significant public health challenge due to associated risks. Maternal age is a key factor, with adolescents and older women at higher risk of prematurity. This study analyzes the distribution of births by gestational age and maternal age in Bolivia, identifying local patterns and age-group differences. Methodology: A retrospective, cross-sectional observational study was conducted using 58,098 live birth certificates from 2022 and 2023, excluding incomplete records. Variables analyzed included gestational age (preterm, term, post-term), degree of prematurity (extreme, very preterm, moderate/late), and maternal age (adolescent, reproductive, advanced). Statistical analysis employed the chi-square test using SPSS software, identifying significant differences in prematurity rates across groups. Results: Among the analyzed births, 6.3% were preterm, 93.6% term, and 0.1% post-term. Of the preterm births, 3.6% were extreme, 7.7% very preterm, and 88.7% moderate/late. The chi-square test (&#967;²: 81.41; p &lt; 0.001) revealed significant differences in prematurity rates by maternal age, highlighting higher risks among adolescents and older women. Discussion: The results emphasize the relationship between maternal age and prematurity. Adolescents and older women face greater risks, linked to complications and disparities in prenatal care access. These findings underscore the need for preventive policies targeting these groups, enhancing prenatal care to reduce risks and improve perinatal outcomes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo.  Introdução:  Os nascimentos prematuros, que afetam 11% dos nascimentos globais, representam um desafio significativo para a saúde pública devido aos riscos associados. A idade materna é um fator chave, com adolescentes e mulheres mais velhas apresentando maior risco de prematuridade. Este estudo analisa a distribuição de nascimentos por idade gestacional e idade materna na Bolívia, identificando padrões locais e diferenças entre grupos etários. Metodologia: Foi realizado um estudo observacional, retrospectivo e transversal com base em 58.098 certificados de nascidos vivos registrados entre 2022 e 2023, excluindo registros incompletos. Foram analisadas variáveis como idade gestacional (prematuro, a termo, pós-termo), grau de prematuridade (extremo, muito prematuro, moderado/tardio) e idade materna (adolescente, reprodutiva, avançada). A análise estatística utilizou o teste qui-quadrado com o software SPSS, identificando diferenças significativas nas taxas de prematuridade entre os grupos. Resultados: Entre os nascimentos analisados, 6,3% foram prematuros, 93,6% a termo e 0,1% pós-termo. Dos prematuros, 3,6% foram extremos, 7,7% muito prematuros e 88,7% moderados/tardios. O teste qui-quadrado (&#967;²: 81,41; p &lt; 0,001) revelou diferenças significativas nas taxas de prematuridade de acordo com a idade materna, destacando maior risco em adolescentes e mulheres mais velhas. Discussão: Os resultados destacam a relação entre idade materna e prematuridade. Adolescentes e mulheres mais velhas enfrentam maior risco, associado a complicações e desigualdades no acesso aos cuidados prénatais. Esses achados reforçam a necessidade de políticas preventivas voltadas a esses grupos, melhorando os cuidados pré-natais para reduzir riscos e otimizar os resultados perinatais.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Nacimientos prematuros]]></kwd>
<kwd lng="es"><![CDATA[Edad gestacional]]></kwd>
<kwd lng="es"><![CDATA[Edad materna]]></kwd>
<kwd lng="es"><![CDATA[Salud pública]]></kwd>
<kwd lng="es"><![CDATA[Riesgo obstétrico]]></kwd>
<kwd lng="es"><![CDATA[Políticas preventivas]]></kwd>
<kwd lng="en"><![CDATA[Preterm births]]></kwd>
<kwd lng="en"><![CDATA[Gestational age]]></kwd>
<kwd lng="en"><![CDATA[Maternal age]]></kwd>
<kwd lng="en"><![CDATA[Public health]]></kwd>
<kwd lng="en"><![CDATA[Obstetric risk]]></kwd>
<kwd lng="en"><![CDATA[Preventive policies]]></kwd>
<kwd lng="pt"><![CDATA[Nascimentos prematuros]]></kwd>
<kwd lng="pt"><![CDATA[Idade gestacional]]></kwd>
<kwd lng="pt"><![CDATA[Idade materna]]></kwd>
<kwd lng="pt"><![CDATA[Saúde pública]]></kwd>
<kwd lng="pt"><![CDATA[Risco obstétrico]]></kwd>
<kwd lng="pt"><![CDATA[Políticas preventivas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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<source><![CDATA[Universitat d'Alacant / Universidad de Alicante]]></source>
<year>2013</year>
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<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cortés Castell]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Rizo-Baeza]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Aguilar Cordero]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Rizo-Baeza]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Gil Guillén]]></surname>
<given-names><![CDATA[V]]></given-names>
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</person-group>
<article-title xml:lang=""><![CDATA[Edad materna como factor de riesgo de prematuridad en España: área mediterránea]]></article-title>
<source><![CDATA[Nutr Hosp]]></source>
<year>2013</year>
<volume>28</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1536-40</page-range></nlm-citation>
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