<?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>1683-9803</journal-id>
<journal-title><![CDATA[Pediatría (Asunción)]]></journal-title>
<abbrev-journal-title><![CDATA[Pediatr. (Asunción)]]></abbrev-journal-title>
<issn>1683-9803</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Paraguaya de Pediatría]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1683-98032023000200070</article-id>
<article-id pub-id-type="doi">10.31698/ped.50022023002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Menarquia en adolescentes de zona urbana y periurbana de encarnación y su asociación con estado nutricional y menarquia materna. Año 2022]]></article-title>
<article-title xml:lang="en"><![CDATA[Menarche in adolescents from urban and peri-urban areas of Encarnación and its association with nutritional status and maternal menarche. Year 2022]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lezcano de Leguizamón]]></surname>
<given-names><![CDATA[María Cristina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Bernal]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Itapúa Facultad de Medicina Departamento de Investigación]]></institution>
<addr-line><![CDATA[Encarnación ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Químicas Carrera de Nutrición]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>50</volume>
<numero>2</numero>
<fpage>70</fpage>
<lpage>78</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S1683-98032023000200070&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S1683-98032023000200070&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S1683-98032023000200070&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La menarquia es un indicador de maduración sexual que se produce entre los 10-15 años. Factores genéticos y ambientales intervienen en la edad de aparición de la menarquia. Objetivos: Determinar la edad de menarquia y su asociación con el estado nutricional y la menarquia materna en adolescentes del 6° grado de instituciones educativas seleccionadas de zona urbana y periurbana de Encarnación.  Materiales y métodos: Estudio observacional, descriptivo con componente analítico en adolescentes sin patología endócrina de base, con consentimiento escrito. Se evaluó presencia de menarquia, edad de inicio, estado nutricional, circunferencia abdominal (CA), menarca materna.  Resultados: Fueron incluidas 112 adolescentes (urbana 51, periurbana 61), edad promedio 12 años. El 77,7%(n=87) refirió menarca, más frecuente en zona urbana (90,2%, vs 67%c2 p=0,003). Edad promedio de menarquia fue 11,1±0,7 años (urbana 11,4±0,5 vs 10,7±0,8, p=0,0001) y fue menor que la materna con 12,8±1,4 años (p=0,0001). El 16,1% tenía obesidad (23% en zona periurbana versus 7,8% en urbana c2 p=0,002), el 0,9% tuvo desnutrición y un 30,4% sobrepeso. Las adolescentes con obesidad tuvieron menarca a los 10,6±0,9 años vs 11,1±0,7 años en el resto (T Student p=0,03). El 13,4%(n=15) tuvo CA aumentada, y en ellas la edad de menarca fue menor (10,6±0,7 años, p=0,03). Conclusión: Dos tercios de las adolescentes refirió menarquia, aquellas de zona periurbana, con obesidad o circunferencia abdominal aumentada mostraron menor promedio de edad de inicio.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Menarche is an indicator of sexual maturation that occurs between 10-15 years of age. Genetic and environmental factors affect the age of onset of menarche.  Objectives: To determine the age of menarche and its association with nutritional status and maternal menarche in 6th grade adolescents from selected educational institutions in urban and peri-urban areas of Encarnación.  Materials and methods:  This was an observational, descriptive study with an analytical component in adolescents without underlying endocrine pathology; written consent was obtained. The presence of menarche, age at onset, nutritional status, abdominal circumference (AC), and maternal menarche were evaluated.  Results: 112 adolescents (51 urban, 61 peri-urban) were included, the average age 12 years. 77.7% (n=87) reported menarche, more frequently in urban areas (90.2%, vs 67%, p=0.003). Mean age at menarche was 11.1 ± 0.7 years (urban 11.4 ± 0.5 vs 10.7 ± 0.8, p = 0.0001) and was lower than the maternal age with 12.8 ± 1, 4 years (p=0.0001). 16.1% were obese (23% in peri-urban areas versus 7.8% in urban areas, p=0.002), 0.9% were undernourished and 30.4% were overweight. Adolescents with obesity had menarche at 10.6±0.9 years vs. 11.1±0.7 years in the rest (Student&#8217;s T, p=0.03). 13.4% (n=15) had increased AC, and in these, the age of menarche was lower (10.6±0.7 years, p=0.03).  Conclusion: Two thirds of the adolescents reported menarche, those from the peri-urban area, with obesity or increased abdominal circumference, showed a lower average age of onset.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Menarquia]]></kwd>
<kwd lng="es"><![CDATA[adolescente]]></kwd>
<kwd lng="es"><![CDATA[urbana]]></kwd>
<kwd lng="es"><![CDATA[periurbana]]></kwd>
<kwd lng="es"><![CDATA[obesidad]]></kwd>
<kwd lng="es"><![CDATA[circunferencia abdominal]]></kwd>
<kwd lng="en"><![CDATA[Menarche]]></kwd>
<kwd lng="en"><![CDATA[adolescent]]></kwd>
<kwd lng="en"><![CDATA[urban]]></kwd>
<kwd lng="en"><![CDATA[peri-urban]]></kwd>
<kwd lng="en"><![CDATA[obesity]]></kwd>
<kwd lng="en"><![CDATA[abdominal circumference]]></kwd>
</kwd-group>
</article-meta>
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