<?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>0124-8146</journal-id>
<journal-title><![CDATA[Investigaciones Andina]]></journal-title>
<abbrev-journal-title><![CDATA[Investig. andina]]></abbrev-journal-title>
<issn>0124-8146</issn>
<publisher>
<publisher-name><![CDATA[Fundación Universitaria del Área Andina - FUNANDI]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0124-81462014000100002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Consistencia interna y estructura interna del cuestionario AUDIT en amerindios]]></article-title>
<article-title xml:lang="en"><![CDATA[Internal consistency and dimensionality of the AUDIT among Amerindians]]></article-title>
<article-title xml:lang="pt"><![CDATA[Consistência interna e estrutura interna do questionário AUDIT em ameríndios]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina]]></surname>
<given-names><![CDATA[Alix Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arévalo]]></surname>
<given-names><![CDATA[Nadia Milena]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltrán]]></surname>
<given-names><![CDATA[Sandra Dolores]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chavarro]]></surname>
<given-names><![CDATA[Yuri Lizeth]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herazo]]></surname>
<given-names><![CDATA[Edwin]]></given-names>
</name>
<xref ref-type="aff" rid="A05"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campo-Arias]]></surname>
<given-names><![CDATA[Adalberto]]></given-names>
</name>
<xref ref-type="aff" rid="A06"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Psicóloga  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Antropóloga  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,Trabajadora Social  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,Universidad Colegio Mayor de Cundinamarca  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="A05">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A06">
<institution><![CDATA[,Instituto de Investigación del Comportamiento Humano Grupo de Investigación del Comportamiento Humano ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2014</year>
</pub-date>
<volume>16</volume>
<numero>28</numero>
<fpage>871</fpage>
<lpage>880</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0124-81462014000100002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0124-81462014000100002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0124-81462014000100002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Objetivo: determinar la consistencia interna y la dimensionalidad del AUDIT en una muestra de amerindios residentes en Bogotá, Colombia. Metodología: se diseñó un estudio metodológico. Participaron 184 amerindios, 99 hombres y 85 mujeres. La media para la edad fue 32,0 años (DE=14,0) y para la escolaridad, 6,1 años (DE=3,7). Se estimaron las correlaciones corregidas de cada ítem con la puntuación total, la consistencia interna (alfa de Cronbach y omega de McDonald) y la dimensionalidad (estructura interna). Resultados: las correlaciones corregidas entre los ítems y la puntuación total se encontraron entre 0,368 y 0,788. El AUDIT mostró alfa de Cronbach de 0,879; omega de McDonald de 0,886; y un factor que explicó el 50,6% de la varianza. Conclusiones: el AUDIT muestra excelente consistencia interna y una estructura unidimensional en amerindios residentes en Bogotá, Colombia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Objective: to establish the internal consistency and dimensionality of the AUDIT among Colombian native Amerindians dwelling in Bogotá, Colombia. Method: a validation study was carried out. A total of 184 Amerindians, 99 men and 85 women. The mean of age was 32.0 years (SD=14.0), and mean of formal scholarship, 6.1 years (SD=3.7). The correlations between items and total score, internal consistency (Cronbach alpha and McDonald omega), and dimensionality (factor structure) were computed. Results: the correlations between items and total score were between 0.368 and 0.788. The AUDIT showed Cronbach alpha of 0.879, McDonald omega of 0.886, and one-dimensional structure that accounted for 50.6% of the total variance. Conclusions: the AUDIT shows excellent internal consistency and one-dimension structure among Amerindians dwelling in Bogota, Colombia.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Objetivo: determinar a consistência interna e a dimensionalidade do AUDIT numa mostra de ameríndios que moram em Bogotá, Colômbia. Método: um estudo metodológico foi desenhado. Participaram 184 ameríndios, 99 homens e 85 mulheres. A idade média foi 32,0 anos (DP=14,0) e a escolaridade média, 6,1 anos (DP=3,7). Se estimaram as correlações corrigidas de cada ítem com o escore total, a consistência interna (alfa de Cronbach e ômega de McDonald) e a dimensionalidade (estrutura interna). Resultados: as correlações corrigidas entre os itens e o escore total foram encontradas entre 0,368 y 0,788. O AUDIT mostrou um alfa de Cronbach de 0,879; ômega de McDonald de 0,886; e um fator que explicou o 50,6% da variância. Conclusões: o AUDIT mostra excelente consistência interna e uma estrutura unidimensional em ameríndios que moram em Bogotá, Colômbia.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cuestionario AUDIT]]></kwd>
<kwd lng="es"><![CDATA[Amerindios]]></kwd>
<kwd lng="es"><![CDATA[Consistencia interna]]></kwd>
<kwd lng="es"><![CDATA[Análisis de factores]]></kwd>
<kwd lng="es"><![CDATA[Estudios de validación]]></kwd>
<kwd lng="en"><![CDATA[AUDIT Questionnaire]]></kwd>
<kwd lng="en"><![CDATA[Amerindians]]></kwd>
<kwd lng="en"><![CDATA[Internal Consistency]]></kwd>
<kwd lng="en"><![CDATA[Factor Analysis]]></kwd>
<kwd lng="en"><![CDATA[Validation Study]]></kwd>
<kwd lng="pt"><![CDATA[Questionário AUDIT]]></kwd>
<kwd lng="pt"><![CDATA[Ameríndios]]></kwd>
<kwd lng="pt"><![CDATA[Consistência Interna]]></kwd>
<kwd lng="pt"><![CDATA[Análises de Fatores]]></kwd>
<kwd lng="pt"><![CDATA[Estudos de Validação]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <font face="verdana" size="2">     <p align="center"><font size="4"><b>Consistencia interna y estructura interna del cuestionario AUDIT en amerindios</b></font></p>     <p align="center"><font size="3"><b>Internal consistency and dimensionality of the AUDIT among Amerindians</b></font></p>     <p align="center"><font size="3"><b>Consist&ecirc;ncia interna e estrutura interna do question&aacute;rio AUDIT em amer&iacute;ndios</b></font></p>     <p><b>Alix Lorena Medina*, Nadia Milena Ar&eacute;valo**, Sandra Dolores Beltr&aacute;n***, Yuri Lizeth Chavarro****, Edwin Herazo*****, Adalberto Campo-Arias******</b></p>     <p>*     Psic&oacute;loga</p>     <p>**    Antrop&oacute;loga</p>     <p>***   Trabajadora Social</p>     <p>****  Trabajadora Social Universidad Colegio Mayor de Cundinamarca, Bogot&aacute;, Colombia. </p>     <p><sup>*****</sup> MD, MSc, estudiante de doctorado en salud p&uacute;blica, Universidad Nacional de Colombia </p>     ]]></body>
<body><![CDATA[<p><sup>******</sup> MD, MSc Grupo de Investigaci&oacute;n del Comportamiento Humano del Instituto de Investigaci&oacute;n del Comportamiento Humano, Bogot&aacute;, Colombia. Correo electr&oacute;nico: <a href="mailto:campoarias@comportamientohumano.org">campoarias@comportamientohumano.org</a></p> <hr>     <p><b><font size="3">Resumen</font></b></p>     <p><b><i>Objetivo: </i></b>determinar la consistencia interna y la dimensionalidad del AUDIT en una muestra de amerindios residentes en Bogot&aacute;, Colombia.</p>     <p><b><i>Metodolog&iacute;a: </i></b>se dise&ntilde;&oacute; un estudio metodol&oacute;gico. Participaron 184 amerindios, 99 hombres y 85 mujeres. La media para la edad fue 32,0 a&ntilde;os (DE=14,0) y para la escolaridad, 6,1 a&ntilde;os (DE=3,7). Se estimaron las correlaciones corregidas de cada &iacute;tem con la puntuaci&oacute;n total, la consistencia interna (alfa de Cronbach y omega de McDonald) y la dimensionalidad (estructura interna).</p>     <p><b><i>Resultados: </i></b>las correlaciones corregidas entre los &iacute;tems y la puntuaci&oacute;n total se encontraron entre 0,368 y 0,788. El AUDIT mostr&oacute; alfa de Cronbach de 0,879; omega de McDonald de 0,886; y un factor que explic&oacute; el 50,6% de la varianza.</p>     <p><b><i>Conclusiones: </i></b>el AUDIT muestra excelente consistencia interna y una estructura unidimensional en amerindios residentes en Bogot&aacute;, Colombia.</p>     <p><b><font size="3">Palabras clave</font></b> Cuestionario AUDIT; Amerindios; Consistencia interna; An&aacute;lisis de factores; Estudios de validaci&oacute;n.</p> <hr>     <p><font size="3"><b>Abstract</b></font></p>     <p><b><i>Objective: </i></b>to establish the internal consistency and dimensionality of the AUDIT among Colombian native Amerindians dwelling in Bogot&aacute;, Colombia.</p>     <p><b><i>Method: </i></b>a validation study was carried out. A total of 184 Amerindians, 99 men and 85 women. The mean of age was 32.0 years (SD=14.0), and mean of formal scholarship, 6.1 years (SD=3.7). The correlations between items and total score, internal consistency (Cronbach alpha and McDonald omega), and dimensionality (factor structure) were computed.</p>     ]]></body>
<body><![CDATA[<p><b><i>Results: </i></b>the correlations between items and total score were between 0.368 and 0.788. The AUDIT showed Cronbach alpha of 0.879, McDonald omega of 0.886, and one-dimensional structure that accounted for 50.6% of the total variance.</p>     <p><b><i>Conclusions: </i></b>the AUDIT shows excellent internal consistency and one-dimension structure among Amerindians dwelling in Bogota, Colombia.</p>     <p><b><font size="3">Key words</font></b> AUDIT Questionnaire; Amerindians; Internal Consistency; Factor Analysis; Validation Study.</p> <hr>     <p><b><font size="3">Resumo</font></b></p>     <p><b><i>Objetivo: </i></b>determinar a consist&ecirc;ncia interna e a dimensionalidade do AUDIT numa mostra de amer&iacute;ndios que moram em Bogot&aacute;, Col&ocirc;mbia.</p>     <p><b><i>M&eacute;todo: </i></b>um estudo metodol&oacute;gico foi desenhado. Participaram 184 amer&iacute;ndios, 99 homens e 85 mulheres. A idade m&eacute;dia foi 32,0 anos (DP=14,0) e a escolaridade m&eacute;dia, 6,1 anos (DP=3,7). Se estimaram as correla&ccedil;&otilde;es corrigidas de cada &iacute;tem com o escore total, a consist&ecirc;ncia interna (alfa de Cronbach e &ocirc;mega de McDonald) e a dimensionalidade (estrutura interna).</p>     <p><b><i>Resultados: </i></b>as correla&ccedil;&otilde;es corrigidas entre os itens e o escore total foram encontradas entre 0,368 y 0,788. O AUDIT mostrou um alfa de Cronbach de 0,879; &ocirc;mega de McDonald de 0,886; e um fator que explicou o 50,6% da vari&acirc;ncia.</p>     <p><b><i>Conclus&otilde;es: </i></b>o AUDIT mostra excelente consist&ecirc;ncia interna e uma estrutura unidimensional em amer&iacute;ndios que moram em Bogot&aacute;, Col&ocirc;mbia.</p>     <p><b><font size="3">Palavras Chave</font></b> Question&aacute;rio AUDIT; Amer&iacute;ndios; Consist&ecirc;ncia Interna; An&aacute;lises de Fatores; Estudos de Valida&ccedil;&atilde;o.</p>     <p><b><i>Fecha de recibo: </i></b>Junio/2013    ]]></body>
<body><![CDATA[<br>     <b><i>Fecha aprobaci&oacute;n:</i></b><i> </i>Enero/2014</p> <hr>     <p><b><font size="3">Introducci&oacute;n</font></b></p>     <p>El consumo de alcohol es alto en amerindios en Norte Am&eacute;rica y Am&eacute;rica Latina (1-4). En amerindios colombianos el consumo problem&aacute;tico de alcohol es significativamente mayor que en la poblaci&oacute;n general (5). En todas las poblaciones el consumo excesivo de alcohol es un problema de salud p&uacute;blica debido al impacto negativo en la morbilidad y mortalidad de los pa&iacute;ses (6, 7).</p>     <p>Existen varios instrumentos para la identificaci&oacute;n de posible consumo problem&aacute;tico de alcohol en distintos grupos poblacionales. En Colombia, el cuestionario m&aacute;s conocido es el CAGE (8). Este instrumento de cuatro &iacute;tems muestra excelente consistencia interna (9, 10). Sin embargo, la brevedad del cuestionario puede limitar la exploraci&oacute;n a fondo el espectro complejo de los trastornos relacionados con el consumo de alcohol en algunas poblaciones (9, 11), en consonancia con las clasificaciones m&aacute;s recientes para los trastornos mentales (12, 13).</p>     <p>Para superar las eventuales limitaciones del cuestionario CAGE se dise&ntilde;&oacute; el cuestionario para la identificaci&oacute;n de trastornos relacionados con el alcohol, en <i>ingl&eacute;s Alcohol Use Disorders Identification Test </i>(AUDIT). Este instrumento consta de diez &iacute;tems que exploran tres dimensiones: el consumo riesgoso de alcohol, s&iacute;ntomas de dependencia al alcohol y el consumo perjudicial de alcohol (14). El AUDIT mostr&oacute; excelente desempe&ntilde;o psicom&eacute;trico en diferentes contextos y poblaciones (15). Siempre se informa el alfa de Cronbach y &eacute;ste se encuentra entre 0,75 y 0,94 (16-26). No obstante, el alfa de Cronbach tiene algunas limitaciones. Es necesario tener presente que el c&aacute;lculo del alfa de Cronbach parte de dos supuestos importantes. El primero es que eval&uacute;a las correlaciones entre &iacute;tems de una escala unidimensional y, el segundo, que los &iacute;tems muestran coeficientes similares en un an&aacute;lisis de factores (principio de tau equivalencia) (27, 28).</p>     <p>En la construcci&oacute;n te&oacute;rica inicial, el AUDIT se dise&ntilde;&oacute; para evaluar las tres dimensiones antes anotadas (14); sin embargo, varios estudios mostraron que una estructura con dos factores era m&aacute;s satisfactoria (17, 29-32) o que un &uacute;nico factor exploraba adecuadamente el constructo de consumo problem&aacute;tico de alcohol (18, 33).</p>     <p>En Colombia, en algunas investigaciones se cuantific&oacute; el riesgo de trastornos relacionados con el consumo de alcohol mediante la administraci&oacute;n del cuestionario AUDIT (34-38). Sin embargo, en estos estudios omitieron informar la consistencia interna (alfa de Cronbach u omega de McDonald) en esas poblaciones y se desconoce la dimensionalidad (estructura interna) del cuestionario AUDIT en los diferentes colectivos de la poblaci&oacute;n colombiana. La consistencia interna y la estructura interna de una escala pueden variar seg&uacute;n la poblaci&oacute;n (39, 40). Adem&aacute;s, algunas investigaciones informan que el AUDIT muestra mejor desempe&ntilde;o que el cuestionario CAGE (16, 41). Es importante conocer la consistencia y la dimensionalidad del cuestionario AUDIT en amerindios colombianos residentes en &aacute;reas urbanas, como primer paso en el proceso de validaci&oacute;n y el uso en la identificaci&oacute;n de posibles trastornos relacionados con el consumo de alcohol, m&aacute;s all&aacute; del patr&oacute;n cultural aceptado de consumo de alcohol en esta poblaci&oacute;n (15).</p>     <p>La connotaci&oacute;n de &quot;consumo problem&aacute;tico&quot; debe ubicarse en un contexto cultural, pol&iacute;tico, religioso, social e hist&oacute;rico, entre otros. Es necesaria una revisi&oacute;n te&oacute;rica y operativa del concepto de consumo problem&aacute;tico de alcohol para la poblaci&oacute;n amerindia; no se puede aceptar sin reflexi&oacute;n los acuerdos, consensos o principios vigentes para la cultura occidental. No obstante esta consideraci&oacute;n, en un estudio se mostr&oacute; que el acercamiento a la cultura latina de los grupos amerindios actuales produjo un cambio significativo en el patr&oacute;n de consumo de alcohol; de un uso espor&aacute;dico, casi siempre en un contexto ritual, a un consumo regular con consecuencias negativas realmente problem&aacute;ticas, como incumplimiento de responsabilidades al interior del grupo, violencia y muerte (42).</p>     <p>El objetivo de este estudio fue determinar la consistencia interna y la dimensionalidad del cuestionario AUDIT en una muestra de amerindios residentes en Bogot&aacute;, Colombia.</p>     <p><b><font size="3">Materiales y m&eacute;todos</font></b></p>     ]]></body>
<body><![CDATA[<p>Se dise&ntilde;&oacute; un estudio metodol&oacute;gico sin contar con un criterio de referencia. Para esta investigaci&oacute;n se solicit&oacute; autorizaci&oacute;n escrita de la mayor autoridad de mayor jerarqu&iacute;a de una comunidad amerindia residente en Bogot&aacute;, de acuerdo con las normas vigentes en Colombia. Las personas consintieron verbalmente participar despu&eacute;s de conocer los objetivos del estudio y el m&iacute;nimo riesgo que representaba para la integridad f&iacute;sica y emocional, como lo contempla la Resoluci&oacute;n 8430 de 1993, que expidi&oacute; el Ministerio de la Salud (actualmente Ministerio de la Protecci&oacute;n Social) (43).</p>     <p>En la investigaci&oacute;n participaron 184 amerindios residentes en Bogot&aacute;, Colombia. Todos hablaban y comprend&iacute;an espa&ntilde;ol adecuadamente. El grupo lo formaron 99 hombres (53,8%) y 85 mujeres (46,2%). La media para la edad fue 32,0 a&ntilde;os (DE=14,0) y para la escolaridad, 6,1 a&ntilde;os (DE=3,7).</p>     <p>Profesionales entrenados para este fin administraron el cuestionario AUDIT a todos los participantes. Este instrumento consta de diez &iacute;tems, tres exploran el consumo riesgoso de alcohol; tres, s&iacute;ntomas de dependencia al alcohol; y cuatro, consumo perjudicial de alcohol. Cada &iacute;tem tiene un patr&oacute;n de respuesta polit&oacute;mico (Likert) de cinco opciones que se califican de uno a cinco (14).</p>     <p>Se estim&oacute; la correlaci&oacute;n corregida de Pearson de cada &iacute;tem con la puntuaci&oacute;n total, la consistencia interna mediante el coeficiente de omega de McDonald (44) y el alfa de Cronbach (45), el alfa de Cronbach con la omisi&oacute;n del &iacute;tem y la consistencia interna del cuestionario completo (45). Se estim&oacute; la dimensionalidad mediante an&aacute;lisis de factores exploratorio mediante el m&eacute;todo de m&aacute;xima verosimilitud. Para saber si era posible llevar a cabo el an&aacute;lisis de factores, se calcularon la prueba de adecuaci&oacute;n de la muestra de Kaiser-Meier-Olkin (KMO) y la prueba de Bartlett de esfericidad de la muestra. Se hallaron la comunalidad de cada &iacute;tem, valores propios y porcentaje de la varianza que explicaba el factor. Todos los datos se procesaron en el paquete estad&iacute;stico STATA (46). </p>     <p><b><font size="3">Resultados</font></b></p>     <p>Las correlaciones corregidas entre los &iacute;tems y la puntuaci&oacute;n total se encontraron entre 0,368 y 0,788 y las consistencias internas con la omisi&oacute;n del &iacute;tem entre 0,852 y 0,890. La media y la desviaci&oacute;n est&aacute;ndar para cada &iacute;tem aparecen en el <a href="#c1">cuadro 1</a>.</p>     <p align="center"><a name="c1"><img src="img/revistas/inan/v16n28/v16n28a02-1.jpg"></a></p>     <p align="center"><a name="c2"><img src="img/revistas/inan/v16n28/v16n28a02-2.jpg"></a></p>     <p align="center"><a name="c3"><img src="img/revistas/inan/v16n28/v16n28a02-3.jpg"></a></p>     <p>Con relaci&oacute;n a la consistencia interna para los diez &iacute;tems del AUDIT, el alfa de Cronbach fue 0,879 y el omega de McDonald, 0,886.</p>     ]]></body>
<body><![CDATA[<p>En el an&aacute;lisis de factores se observ&oacute; una prueba de KMO que mostr&oacute; un coeficiente de 0,904 y una prueba de Bartlett alcanz&oacute; un chi-cuadrado=873,91; grado de libertad = 45; y p=0,001. El AUDIT mostr&oacute; un &uacute;nico factor con un valor propio de 5,06 que dio cuenta del 50,6% de la varianza total. La comunalidad de cada &iacute;tem y la matriz de coeficientes se muestran en el <a href="#c3">cuadro 3</a>.</p>     <p><b><font size="3">Discusi&oacute;n</font></b></p>     <p>En el presente estudio se observa que el cuestionario AUDIT muestra alta consistencia interna y una estructura unidimensional para la identificaci&oacute;n de trastornos relacionados con el consumo de alcohol en amerindios residentes en Bogot&aacute;, Colombia.</p>     <p>La consistencia interna es una medida directa de confiabilidad e indirecta de validez de constructo, dado que es una estimaci&oacute;n de la correlaci&oacute;n que existe entre los &iacute;tems (39). En el presente estudio se encontr&oacute; que la consistencia interna en el rango deseado, similar a lo que se inform&oacute; en estudios precedentes que calcularon el alfa de Cronbach (16, 17, 21-26). Sin embargo, otros estudios mostraron consistencia interna mediante alfa de Cronbach superior a 0,90 (18-20). Valores de consistencia interna superior a 0,90 en escala de veinte &iacute;tems o menos indica que la escala cuenta con &iacute;tems redundantes, es decir, la presencia de varios &iacute;tems con alta correlaci&oacute;n entre ellos, lo que sugiere que miden el mismo aspecto del constructo (47).</p>     <p>En estos casos, para algunas poblaciones, se pueden eliminar uno o m&aacute;s &iacute;tems sin deterioro en el desempe&ntilde;o psicom&eacute;trico de la escala (39). Desde los primeros estudios se evidenci&oacute; que la variabilidad en la consistencia interna del cuestionario AUDIT se pod&iacute;a explicar por la diversidad en las consecuencias del consumo de alcohol en las distintas culturas (48). Es importante tener presente que ninguna de las investigaciones previas present&oacute; el valor del omega de McDonald que tiene relevancia cuando los &iacute;tems no muestran tau equivalencia (44).</p>     <p>La dimensionalidad o estructura interna de una escala se refiere al n&uacute;mero de dominios, factores o dimensiones, en los cuales se re&uacute;nen un grupo de &iacute;tems (49). Por lo general, las escalas se construyen con base en algunas supuestas dimensiones te&oacute;ricas que deben probarse emp&iacute;ricamente. El an&aacute;lisis de factores es una estrategia matem&aacute;tica para probar la dimensionalidad de una escala y aproximarse a la validez del constructo (50) y esta puede variar, en algunos casos significativamente, seg&uacute;n la poblaci&oacute;n (51). En el presente estudio se observ&oacute; que el cuestionario AUDIT presenta una estructura unidimensional. Este hallazgo es consistente con estudios previos que observaron que los diez &iacute;tems del cuestionario se agrupaban en un &uacute;nico factor (18, 33). No obstante, varios estudios informaron que el cuestionario AUDIT mostraba dos dimensiones que daban cuenta del mayor porcentaje de la varianza (17, 29-32). Todos los estudios disponibles muestran que el cuestionario AUDIT no lo componen tres dimensiones como se plante&oacute; te&oacute;ricamente durante el dise&ntilde;o del instrumento (14).</p>     <p>Los hallazgos del presente estudio sugieren que el cuestionario AUDIT se puede emplear como instrumento de tamizaje para el consumo problem&aacute;tico de alcohol en amerindios residentes en Bogot&aacute;. La identificaci&oacute;n temprana de posibles casos de consumo problem&aacute;tico de alcohol reduce en forma importante las consecuencias negativas personales (f&iacute;sicas y emocionales), familiares y sociales de uso cr&oacute;nico de alcohol (6, 7, 52-54).</p>     <p>El AUDIT muestra altas correlaciones entre los &iacute;tems y la puntuaci&oacute;n total, excelente consistencia interna y una estructura unidimensional para la identificaci&oacute;n de trastornos relacionados con el consumo de alcohol en amerindios residentes en Bogot&aacute;, Colombia. Se necesitan estudios que muestren el comportamiento psicom&eacute;trico del cuestionario AUDIT frente a un criterio de referencia.</p>     <p><b>Declaraci&oacute;n de intereses</b></p>     <p>Sin conflictos de intereses que declarar.</p>     ]]></body>
<body><![CDATA[<p><b>Agradecimientos</b></p>     <p>El Instituto de Investigaci&oacute;n del Comportamiento Humano financi&oacute; parcialmente este estudio.</p>     <p><b><font size="3">Referencias</font></b></p>     <!-- ref --><p>1. Seale JP, Seale JD, Alvarado M, Vogel RL, Terry NE. Prevalence of problem drinking in a Venezuelan Native American population. Alcohol Alcohol. 2002; 37: 198-204.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000066&pid=S0124-8146201400010000200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>2. Vicente B, Kohn R, Rioseco P, Saldivia S, Torres S. Psychiatric disorders among the Mapuche in Chile. 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