<?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>0300-9041</journal-id>
<journal-title><![CDATA[Ginecología y obstetricia de México]]></journal-title>
<abbrev-journal-title><![CDATA[Ginecol. obstet. Méx.]]></abbrev-journal-title>
<issn>0300-9041</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Colegios de Obstetricia y Ginecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0300-90412025000200047</article-id>
<article-id pub-id-type="doi">10.24245/gom.v93i2.161</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Edad materna avanzada y riesgos en el primer embarazo: un análisis de complicaciones materno-perinatales]]></article-title>
<article-title xml:lang="en"><![CDATA[Advanced maternal age and risks in the first pregnancy: an analysis of maternal-perinatal complications.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pantigos Gutierrez]]></surname>
<given-names><![CDATA[Digna Felicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mascaro Sánchez]]></surname>
<given-names><![CDATA[Pedro Arnaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arango Ochante]]></surname>
<given-names><![CDATA[Pedro M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Peruana Unión  ]]></institution>
<addr-line><![CDATA[Lima ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Mayor de San Marcos Facultad de Medicina, ]]></institution>
<addr-line><![CDATA[ Lima]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Ricardo Palma Instituto de Investigaciones en Ciencias Biomédicas ]]></institution>
<addr-line><![CDATA[ Lima]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>93</volume>
<numero>2</numero>
<fpage>47</fpage>
<lpage>56</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412025000200047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412025000200047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412025000200047&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO: Analizar si la edad materna avanzada en primigestas de una institución determinada constituye un riesgo de posibles complicaciones maternas y perinatales.  MATERIALES Y MÉTODOS: Estudio analítico, observacional, de cohorte retrospectiva, efectuado en pacientes primigestas atendidas en el servicio de Ginecología y Obstetricia del Hospital Vitarte, Lima, Perú, entre enero 2014 y diciembre 2018. Las asociaciones de factores de riesgo se determinaron mediante el cálculo de riesgos relativos (RR) con intervalos de confianza del 95%, considerando un valor de p &lt; 0.05 como estadísticamente significativo en los análisis.  RESULTADOS: Se registraron 13,185 partos, de los que el 4.8% (n = 643) correspondieron a primigestas con edad materna avanzada. La media de estas últimas fue 38 ± 2 años en comparación con 26 ± 4 años para las primigestas de 20 a 34 años. Las complicaciones con significación estadística durante el embarazo incluyeron a los trastornos hipertensivos del embarazo. Entre estos trastornos, la preeclampsia fue particularmente prevalente en el grupo de estudio, con una incidencia del 23.3%, en comparación con el 7% en el grupo no expuesto. Se identificó mayor riesgo en las distocias de presentación, oligohidramnios y embarazo prolongado. Las complicaciones relevantes en la finalización del embarazo fueron: cesárea, trabajo de parto disfuncional (p = 0.017) y las distocias fetales de presentación.  CONCLUSIÓN: La edad avanzada de las madres primigestas constituye un factor de riesgo de diversas complicaciones materno-perinatales. El análisis multivariado mediante regresión de Poisson identificó una asociación independiente entre la edad avanzada de la madre y el mayor riesgo de cesárea, preeclampsia, oligohidramnios, trabajo de parto disfuncional, distocias de presentación y complicaciones neonatales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE: To analyze whether advanced maternal age is a risk for possible maternal and perinatal complications in first-time pregnant women in each institution.  MATERIALS AND METHODS:  Retrospective, observational, analytical cohort study of primigravida patients treated at the Gynecology and Obstetrics Department of the Hospital de Vitarte in Lima, Peru, between January 2014 and December 2018. Associations of risk factors were determined by calculating relative risks (RR) with 95% confidence intervals, considering a p-value &lt; 0.05 as statistically significant in the analyses.  RESULTS:  13,185 deliveries were recorded, of which 4.8% (n = 643) were primigravida with advanced maternal age. The mean age of the latter was 38 ± 2 years compared to 26 ± 4 years for primigravidae aged 20 to 34 years. Complications with statistical significance during pregnancy included hypertensive disorders of pregnancy. Among these disorders, pre-eclampsia was particularly common in the study group, with an incidence of 23.3% compared with 7.0% in the unexposed group. An increased risk was observed for presentation dystocia, oligohydramnios and large for gestational age. The relevant complications for termination of pregnancy were cesarean section, dysfunctional labor (p = 0.017), and fetal presentation dystocia.  CONCLUSION:  Advanced maternal age is a risk factor for several maternal and perinatal complications. Multivariate Poisson regression analysis revealed an independent association between advanced maternal age and increased risk of cesarean section, pre-eclampsia, oligohydramnios, dysfunctional labor, presentation dystocia, and neonatal complications.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Edad materna avanzada]]></kwd>
<kwd lng="es"><![CDATA[embarazo]]></kwd>
<kwd lng="es"><![CDATA[trastornos hipertensivos]]></kwd>
<kwd lng="es"><![CDATA[distocia]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[presentación del parto]]></kwd>
<kwd lng="en"><![CDATA[Advanced maternal age]]></kwd>
<kwd lng="en"><![CDATA[Pregnancy]]></kwd>
<kwd lng="en"><![CDATA[Hypertensive disorders]]></kwd>
<kwd lng="en"><![CDATA[Dystocia]]></kwd>
<kwd lng="en"><![CDATA[Risk factors]]></kwd>
<kwd lng="en"><![CDATA[Labor presentation]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Tanbo]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Åbyholm]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The impact of advanced maternal age and parity on obstetric and perinatal outcomes in singleton gestations]]></article-title>
<source><![CDATA[Arch Gynecol Obstet]]></source>
<year>2011</year>
<volume>284</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>31-7</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Macías Villa]]></surname>
<given-names><![CDATA[HLG]]></given-names>
</name>
<name>
<surname><![CDATA[Moguel Hernández]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Iglesias Leboreiro]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Edad materna avanzada como factor de riesgo perinatal y del recién nacido]]></article-title>
<source><![CDATA[Acta Médica Grupo Ángeles]]></source>
<year>2018</year>
<volume>16</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>125-32</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<collab>Organización Panamericana de la Salud</collab>
<source><![CDATA[Un estudio de OPS sobre mortalidad materna y COVID-19 muestra barreras en el acceso de las embarazadas a cuidados críticos - OPS/OMS]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ayala Peralta]]></surname>
<given-names><![CDATA[FD]]></given-names>
</name>
<name>
<surname><![CDATA[Arango-Ochante]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Espinola-Sánchez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ayala Moreno]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factores asociados a morbilidad materna y perinatal en gestantes con edad materna avanzada]]></article-title>
<source><![CDATA[Clin Investig Ginecol Obstet]]></source>
<year>2021</year>
<volume>48</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>21-8</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ramírez]]></surname>
<given-names><![CDATA[AA.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Morbilidad obstétrica de la primigesta añosa en el Hospital D.A.C]]></article-title>
<source><![CDATA[Huancayo-Perú. Prospectiva Universitaria]]></source>
<year>2011</year>
<volume>8</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>79-89</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="">
<collab>CDC</collab>
<collab>MINSA</collab>
<source><![CDATA[Sala situacional de Muerte Materna]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sánchez-González]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Crespo-Naranjo]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Oca-González]]></surname>
<given-names><![CDATA[SM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influencia de la edad de la madre en los desenlaces perinatales y maternos]]></article-title>
<source><![CDATA[Ginecol Obstet Mex]]></source>
<year>2023</year>
<volume>91</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ayala-Peralta]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Guevara-Ríos]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez-Herrera]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Edad materna avanzada y morbilidad obstétrica]]></article-title>
<source><![CDATA[Revista Peruana de Investigación Materno Perinatal]]></source>
<year>2016</year>
<volume>5</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>9-15</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="">
<collab>Consellería de Sanidade</collab>
<collab>Xunta de Galicia E</collab>
<collab>Organización Panamericana de la Salud O</collab>
<collab>Universidad CES C</collab>
<source><![CDATA[Epidat: programa para análisis epidemiológico de datos]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sudjai]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Soongsatitanon]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Adverse outcomes in advanced maternal age: A case-control study]]></article-title>
<source><![CDATA[Vajira Medical Journal]]></source>
<year>2020</year>
<volume>64</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>117-24</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schuller W]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Benítez-Guerra]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Soto]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Estudio de las gestantes de edad avanzada en el Hospital Universitario de Caracas]]></article-title>
<source><![CDATA[Revista de la Facultad de Medicina]]></source>
<year>2007</year>
<volume>30</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>24-37</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torres Meza]]></surname>
<given-names><![CDATA[PM.]]></given-names>
</name>
</person-group>
<source><![CDATA[Edad materna avanzada como factor de riesgo asociado a resultados materno - perinatales adversos en pacientes atendidas en el Hospital Militar Central, 2020- 2021]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[AlJahdali]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<name>
<surname><![CDATA[AlSinani]]></surname>
<given-names><![CDATA[NS.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pregnancy outcomes at advanced maternal age in a tertiary Hospital, Jeddah, Saudi Arabia]]></article-title>
<source><![CDATA[Saudi Med J]]></source>
<year>2022</year>
<volume>43</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>491-9</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morón Salazar]]></surname>
<given-names><![CDATA[YDC.]]></given-names>
</name>
</person-group>
<source><![CDATA[Edad materna avanzada como factor asociado a resultados obstétrico-neonatales adversos en gestantes nulíparas atendidas en el Hospital Carlos Lanfranco la Hoz 2015-2016]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Barahona Rojas]]></surname>
<given-names><![CDATA[SK.]]></given-names>
</name>
</person-group>
<source><![CDATA[Edad materna avanzada y su asociación con las complicaciones materno perinatales en gestantes atendidas en el Hospital Sergio E Bernales 2017]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nolasco-Blé]]></surname>
<given-names><![CDATA[AK]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández-Herrera]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Ramos-González]]></surname>
<given-names><![CDATA[RM.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hallazgos perinatales de embarazos en edad materna avanzada]]></article-title>
<source><![CDATA[Ginecol Obstet Mex]]></source>
<year>2012</year>
<volume>80</volume>
<numero>4</numero>
<issue>4</issue>
</nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[María-Ortiz]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Álvarez-Silvares]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Alves-Pérez]]></surname>
<given-names><![CDATA[MT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Desenlaces maternos y neonatales relacionados con edad materna avanzada]]></article-title>
<source><![CDATA[Ginel Obstet Mex]]></source>
<year>2020</year>
<volume>88</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>80-91</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Della Fontana]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Goyechea]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Factores perinatales presentes en madres de edad avanzada. Salta, Capital 2002-2011]]></article-title>
<source><![CDATA[Antropo]]></source>
<year>2022</year>
<numero>47</numero>
<issue>47</issue>
<page-range>47-53</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quenaya-Coaquira]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Ticona-Rendón]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Huanco-Apaza]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Relación entre edad materna avanzada y resultados materno perinatales en el Hospital Hipólito Unanue de Tacna 2000-2018]]></article-title>
<source><![CDATA[Revista Médica Hospital Hipólito Unanue de Tacna]]></source>
<year>2019</year>
<volume>12</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>42-9</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ben-David]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Glasser]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Schiff]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Zahav]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<name>
<surname><![CDATA[Boyko]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Lerner-Geva]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pregnancy and birth outcomes among primiparae at very advanced maternal age: At What Price?]]></article-title>
<source><![CDATA[Matern Child Health J]]></source>
<year>2016</year>
<volume>20</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>833-42</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Correa-de-Araujo]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Yoon SS]]></surname>
<given-names><![CDATA[(Sarah)]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical Outcomes in high-risk pregnancies due to advanced maternal age]]></article-title>
<source><![CDATA[J Womens Health]]></source>
<year>2021</year>
<volume>30</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>160-7</page-range></nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Anozie]]></surname>
<given-names><![CDATA[OB]]></given-names>
</name>
<name>
<surname><![CDATA[Mamah]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Esike]]></surname>
<given-names><![CDATA[CU]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pregnancy outcome among elderly primigravidae: a five-year review at Abakaliki, Ebonyi State, Nigeria]]></article-title>
<source><![CDATA[JCDR]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mehari]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Maeruf]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Robles]]></surname>
<given-names><![CDATA[CC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Advanced maternal age pregnancy and its adverse obstetrical and perinatal outcomes in Ayder comprehensive specialized hospital, Northern Ethiopia, 2017: a comparative cross-sectional study]]></article-title>
<source><![CDATA[BMC Pregnancy and Childbirth]]></source>
<year>2020</year>
<volume>20</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>60</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tochie]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<name>
<surname><![CDATA[Sibetcheu]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
<name>
<surname><![CDATA[Arrey-Ebot]]></surname>
<given-names><![CDATA[PE]]></given-names>
</name>
<name>
<surname><![CDATA[Choukem]]></surname>
<given-names><![CDATA[SP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Global, Regional and National Trends in the Burden of Neonatal Respiratory Failure and essentials of its diagnosis and management from 1992 to 2022: a scoping review]]></article-title>
<source><![CDATA[Eur J Pediatr]]></source>
<year>2024</year>
<volume>183</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>9-50</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
