<?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>2524-177X</journal-id>
<journal-title><![CDATA[Revista médica del Hospital General de México]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. med. Hosp. Gen. Méx.]]></abbrev-journal-title>
<issn>2524-177X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Médica del Hospital General de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2524-177X2020000300113</article-id>
<article-id pub-id-type="doi">10.24875/hgmx.20000083</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Prevalence of Vitamin D deficiency and associated factors in Mexican patients with allergic rhinitis and asthma]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urquiza-Ramírez]]></surname>
<given-names><![CDATA[César I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandez de Cordova-Aguirre]]></surname>
<given-names><![CDATA[Juan C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velasco-Medina]]></surname>
<given-names><![CDATA[Andrea A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velazquez-Samano]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital General de México Allergy and Clinical Immunology Service ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>83</volume>
<numero>3</numero>
<fpage>113</fpage>
<lpage>119</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2524-177X2020000300113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2524-177X2020000300113&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2524-177X2020000300113&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ Introduction: The general population has impaired serum Vitamin D (VD) levels. Poor values are associated with allergic diseases.  Objective: The objective of the study was to determine the prevalence of VD deficiency and associated factors in patients with allergic rhinitis and asthma.  Material and methods: This is a descriptive study in children 3-14 years old, with allergic rhinitis and asthma sensitized to aeroallergens identified by skin prick tests. We measured serum 25-hydroxy VD levels and evaluated associated factors.  Results: Sixty-three patients were included, with a mean age of 7.25 years old, 54% were female. Mean weight was 26.7 kg, mean VD levels were 23.66 ng/ml (± 7.28), 22.2% had sufficient levels, 47.6% had insufficient levels, and 30.2% had deficient levels. We found an association with increased risk of VD deficiency in patients ages 12-14 years old (odds ratio [OR] 7.5, confidence interval [CI] 1.306-43.066), the skin type V with (OR 3.444, IC 2.334-5.083), and the lack of consumption of cod liver supplements (OR 1.475, CI 1.237-1.759).  Conclusions: This sample of Mexican patients with allergic rhinitis and asthma showed the high prevalence of both VD deficiency and insufficiency. Consumption of cod liver supplements was a protective factor for deficiency. No association between VD deficiency and severity of allergic rhinitis and asthma was found in this sample of patients in the Mexican General Hospital of Mexico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Vitamin D deficiency]]></kwd>
<kwd lng="en"><![CDATA[Asthma]]></kwd>
<kwd lng="en"><![CDATA[Allergic rhinitis]]></kwd>
</kwd-group>
</article-meta>
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