<?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>0121-8123</journal-id>
<journal-title><![CDATA[Revista Colombiana de Reumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Colomb.Reumatol.]]></abbrev-journal-title>
<issn>0121-8123</issn>
<publisher>
<publisher-name><![CDATA[Asociación Colombiana de Reumatología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-81232017000400205</article-id>
<article-id pub-id-type="doi">10.1016/j.rcreu.2017.08.001</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Prevalence of vitamin D levels in patients with autoimmune diseases in Ecuador: A retrospective study]]></article-title>
<article-title xml:lang="es"><![CDATA[Prevalencia de vitamina D en pacientes con enfermedades autoinmunes en Ecuador: estudio restrospectivo]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado]]></surname>
<given-names><![CDATA[Génessis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guerrero]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ríos]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Especialidades Espíritu Santo  ]]></institution>
<addr-line><![CDATA[Samborondón ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Reumatología y Rehabilitación  ]]></institution>
<addr-line><![CDATA[Guayaquil ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>24</volume>
<numero>4</numero>
<fpage>205</fpage>
<lpage>210</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-81232017000400205&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-81232017000400205&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-81232017000400205&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Vitamin D is a hormone that maintains a fundamental role in the phosphocalcic metabolism. In recent years, studies have shown an association between vitamin D deficiency and different rheumatic diseases.  Purpose:  To evaluate vitamin D levels in patients at a rheumatology center during a period of 2015-2016.  Methods:  A retrospective study of patients who attended a rheumatology center, who had an initial study of 25(OH)D serum. Vitamin D levels were classified as: normal: 30-40 ng/mL, deficiency: 30-20 ng/mL, insufficiency: 20-10 ng/mL and severe insufficiency: &lt;10 ng/mL.  Results:  279 patients with a mean age of 58 years [8-93], 86% women [58.4 years] and 14% men [59.8 years] were included. The mean value of vitamin D was 29.09 ng/mL. A total of 41.2% (115) of the patients had values &gt;30 ng/mL, and 58.8% (164) below this range. The most frequent primary diagnoses found were: osteoarthrosis, rheumatoid arthritis, fibromyalgia and osteoporosis; from which low levels of vitamin D &#8804;30 ng/mL were identified in 53.8%, 69.7%, 76.5% and 42.9%, respectively.  Conclusion:  There is a high incidence of hypovitaminosis D in Ecuadorian patients who came to a rheumatology center.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La vitamina D es una hormona que mantiene un papel fundamental en el metabolismo fosfocálcico. En los últimos arios, los estudios han demostrado una asociación entre la deficiencia de vitamina D y diferentes enfermedades reumáticas.  Objetivo:  Evaluar los niveles de vitamina D en pacientes en un centro de reumatologia durante el periodo de 2015-2016.  Métodos:  Estudio retrospectivo de pacientes que acudieron a un centro de reumatología, que realizaron un estudio inicial de suero 25 (OH) D. Los niveles de vitamina D se clasificaron como normal: 30-40 ng/mL, deficiencia: 30-20 ng/mL, insuficiencia: 20-10 ng/mL e insuficiencia severa: &lt;10 ng/mL.  Resultados:  Se incluyeron 279 pacientes con una edad media de 58 años (8-93), 86% mujeres (58,4 años) y 14% hombres (59,8 años). El valor medio de la vitamina D fue de 29,09 ng/mL. Un total de 41,2% (115) de los pacientes tenía valores&gt; 30ng/ml y 58,8% (164) por debajo de este rango. Los diagnósticos primarios más frecuentes encontrados fueron: osteoartrosis, artritis reumatoide, fibromialgia y osteoporosis; de los cuales se identificaron niveles bajos de vitamina D &#8804; 30 ng/mL en 53,8; 69,7; 76,5 y 42,9%, respectivamente.  Conclusión:  Existe una alta incidencia de hipovitaminosis D en pacientes ecuatorianos que acudieron a un centro de reumatología.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Vitamin D]]></kwd>
<kwd lng="en"><![CDATA[Epidemiology]]></kwd>
<kwd lng="en"><![CDATA[Ecuador]]></kwd>
<kwd lng="es"><![CDATA[Vitamina D]]></kwd>
<kwd lng="es"><![CDATA[Epidemiología]]></kwd>
<kwd lng="es"><![CDATA[Ecuador]]></kwd>
</kwd-group>
</article-meta>
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