<?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>2007-7459</journal-id>
<journal-title><![CDATA[Horizonte sanitario]]></journal-title>
<abbrev-journal-title><![CDATA[Horiz. sanitario]]></abbrev-journal-title>
<issn>2007-7459</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, División Académica de Ciencias de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-74592022000300469</article-id>
<article-id pub-id-type="doi">10.19136/hs.a21n3.4691</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cronotipo y su relación con el estrés percibido en estudiantes de medicina]]></article-title>
<article-title xml:lang="en"><![CDATA[Chronotype and its relationship with perceived stress in medical students]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santamaría-Juárez]]></surname>
<given-names><![CDATA[Kathia Leonor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cortés-Romero]]></surname>
<given-names><![CDATA[Celso Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>21</volume>
<numero>3</numero>
<fpage>469</fpage>
<lpage>475</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-74592022000300469&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-74592022000300469&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-74592022000300469&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo: Evaluar el cronotipo y su relación con el nivel de estrés percibido en estudiantes de medicina de una Universidad Pública de México.  Material y métodos: Estudio transversal, que incluyó 332 universitarios. Se aplicaron el cuestionario de matutinidad-vespertinidad (MEQ) y la escala de estrés percibido (PSS-14). Se emplearon las pruebas no paramétricas de Kruskal-Wallis para establecer diferencias estadísticas entre cronotipos y el coeficiente de Spearman para establecer la correlación entre puntajes de escalas. Se consideró un nivel de significancia estadística de p&lt;0.05.  Resultados: Para el total de la muestra, la mediana del puntaje del MEQ fue 52. El cronotipo tuvo la siguiente distribución: 21.1% matutino; 72.3% intermedio; 6.6% vespertino. La mediana del puntaje de la PSS-14 fue 28. El puntaje del nivel de estrés percibido en mujeres fue mayor al de los hombres (29 vs 24.5; p=0.000). En cada cronotipo la mediana del puntaje de la PSS-14 fue mayor en mujeres que en hombres, aunque sólo se encontró diferencia estadísticamente significativa entre vespertinos (p=0.000). El resultado del coeficiente de correlación de Spearman mostró una relación significativa entre el cronotipo y el puntaje de estrés percibido (rho= -0.143; p=0.009).  Conclusión: El cronotipo vespertino está relacionado con un mayor puntaje de estrés percibido, particularmente en mujeres quienes tuvieron la puntuación más alta en cada cronotipo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: To assess chronotype and its relationship with the perceived stress level in medical students from a public university in Mexico.  Material and methods: Cross-sectional study that included 332 college students. Morningness-eveningness questionnaire (MEQ) and perceived stress scale (PSS-14) were applied. Non-parametric Kruskal-Wallis test was used to establish statistical differences between chronotypes and the Spearman correlation coefficient was used to establish a correlation between MEQ and PSS-14 scores. The p-value equal to or less than 0.05 corresponded to the statistically significant result (p&lt;0.05).  Results: For the entire sample, the median of the MEQ score was 52. The distribution of chronotypes was as follows: 21.1% morning chronotype; 72.3% intermediate chronotype; 6.6% evening chronotype. The PSS-14 median score was 28. PSS-14 score in women was higher than in men (29 vs 24.5; p= 0.000). The median of the PSS-14 score in each chronotype group was higher in women than in men; nevertheless, a statistically significant difference between them was only found in evening chronotype (p= 0.000). The result of Spearman&#8217;s correlation coefficient showed significant relationship between chronotype and perceived stress score (rho= -0.143; p=0.009).  Conclusion: Evening chronotype is associated with a higher PSS-14 score, particularly in women, who had the highest score in each chronotype.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Circadiano]]></kwd>
<kwd lng="es"><![CDATA[Estrés]]></kwd>
<kwd lng="es"><![CDATA[Estudiantes de medicina]]></kwd>
<kwd lng="es"><![CDATA[Spearman]]></kwd>
<kwd lng="en"><![CDATA[Circadian]]></kwd>
<kwd lng="en"><![CDATA[Stress]]></kwd>
<kwd lng="en"><![CDATA[Medical students]]></kwd>
<kwd lng="en"><![CDATA[Spearman]]></kwd>
</kwd-group>
</article-meta>
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