<?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>1729-519X</journal-id>
<journal-title><![CDATA[Revista Habanera de Ciencias Médicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev haban cienc méd]]></abbrev-journal-title>
<issn>1729-519X</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Ciencias Médicas de la Habana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1729-519X2021000600013</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Agregación familiar y factores de riesgo de asma bronquial en individuos afectados]]></article-title>
<article-title xml:lang="en"><![CDATA[Familial aggregation and risk factors for bronchial asthma in affected individuals]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Delgado]]></surname>
<given-names><![CDATA[Julio Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Lara]]></surname>
<given-names><![CDATA[Nailé Edita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Ciencias Médicas de Holguín Filial Ciencias Médicas &#8220;Urselia Díaz Báez&#8221; ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Municipal de Genética  ]]></institution>
<addr-line><![CDATA[Holguín ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>20</volume>
<numero>6</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1729-519X2021000600013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1729-519X2021000600013&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1729-519X2021000600013&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La agregación familiar del asma se reconoce desde 1 860 a constatarse en varias generaciones de una familia.  Objetivo:  Determinar la agregación familiar para asma bronquial y los factores de riesgo.  Material y Métodos:  Se realizó una investigación observacional, analítica, longitudinal, retrospectiva, casos/control a partir de la población perteneciente al área de salud &#8220;Darío Calzadilla&#8221;, en Banes, provincia Holguín, durante octubre 2020-marzo 2021. El universo abarcó la totalidad de individuos diagnosticados y sus familias. Por muestreo aleatorio simple, se obtuvo la muestra de 77 casos. Se conformó el grupo control a razón de 3:1, que incluyó 231 individuos sin antecedentes de enfermedad. Fueron aplicados criterios de inclusión/exclusión. Fueron utilizados los estadígrafos: Chi cuadrado, Odd Ratio (OR) e intervalo de confianza. Se estudiaron las variables: edad, grado de consanguinidad y factores de riesgo. Se obtuvo el árbol genealógico. Se cumplieron los requisitos bioéticos.  Resultados:  Los familiares de primer grado (47 individuos 17 %) y segundo grado (23 individuos 4,3 %) de consanguinidad mostraron la mayor incidencia de la enfermedad. Los grupos de edades 40-49 años (51 individuos, 22,8 %) y 30-39 años (32 individuos, 22,3 %), resultaron los más afectados. Los factores de riesgos mostraron asociación para la enfermedad (X2=111,15 p &#8804; 0,001). El hábito de fumar (X2=132,9 OR=6,18 IC95 % (4,49; 8,51)) y los antecedentes familiares de la enfermedad (X2=13,6 OR=1,73 IC95 % (1,29; 2,32)) expresaron asociación altamente significativa. Se demostró agregación familiar para la enfermedad (X2=185,32 OR=9,97 IC95 % (6,7; 14,84)).  Conclusiones:  El asma bronquial es una enfermedad multifactorial, compleja, poligénica con agregación familiar demostrada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Familial aggregation of asthma has been recognized since 1860 and observed in several generations in one family.  Objective:  To determine familial aggregation of bronchial asthma as well as its risk factors.  Material and Methods: An observational, analytical, longitudinal, and retrospective case-control study was conducted on the population belonging to &#8220;Darío Calzadilla&#8221; health area in Banes, Holguín province, from October 2020 to March 2021. The universe consisted of all the individuals diagnosed and their families. A sample composed of 77 cases was obtained by simple random sampling. The control group was formed at a ratio of 3:1, including 231 individuals without previous history of the disease. Inclusion and exclusion criteria were applied. The following stadigraphs were used: Chi-square test, Odds Ratio (OR), and confidence interval. The variables analyzed included age, degree of consanguinity, and risk factors. The family tree was obtained. Bioethical principles were fulfilled.  Results:  The first-degree relatives (47 individuals; 17 %) and second-degree (23 individuals; 4,3 %) of consanguinity showed a higher incidence of the disease. The age group 40-49 years (51 individuals; 22,8 %) and 30-39 years (32 individuals; 22,3 %), resulted to be the most affected. The risk factors evidenced an association with the disease (X2=111,15 p&#8804;0,001). The smoking habit (X2=132,9 OR=6,18 95 % CI (4,49; 8,51)) and family history of the disease (X2=13,6 OR=1,73 95 % CI (1,29; 2,32)) expressed a highly significant association. Familial aggregation of the disease was demonstrated (X2=185,32 OR=9,97 95 % CI (6,7;14,84)).  Conclusions:  Bronchial asthma is a complex, multifactorial, polygenic disease with confirmed familial aggregation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Asma bronquial]]></kwd>
<kwd lng="es"><![CDATA[agregación familiar]]></kwd>
<kwd lng="es"><![CDATA[riesgo genético]]></kwd>
<kwd lng="es"><![CDATA[factores de riesgo]]></kwd>
<kwd lng="es"><![CDATA[herencia]]></kwd>
<kwd lng="es"><![CDATA[genes]]></kwd>
<kwd lng="en"><![CDATA[Bronchial asthma]]></kwd>
<kwd lng="en"><![CDATA[familial aggregation]]></kwd>
<kwd lng="en"><![CDATA[genetic risk]]></kwd>
<kwd lng="en"><![CDATA[risk factors]]></kwd>
<kwd lng="en"><![CDATA[inheritance]]></kwd>
<kwd lng="en"><![CDATA[genes]]></kwd>
</kwd-group>
</article-meta>
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<given-names><![CDATA[C]]></given-names>
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