<?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>0036-3634</journal-id>
<journal-title><![CDATA[Salud Pública de México]]></journal-title>
<abbrev-journal-title><![CDATA[Salud pública Méx]]></abbrev-journal-title>
<issn>0036-3634</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Salud Pública]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0036-36342016000600617</article-id>
<article-id pub-id-type="doi">10.21149/spm.v58i6.7862</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Validity of a food frequency questionnaire to assess food intake in Mexican adolescent and adult population]]></article-title>
<article-title xml:lang="es"><![CDATA[Validación de un cuestionario de frecuencia de alimentos para evaluar la ingesta alimentaria en adolescentes y adultos de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Denova-Gutiérrez]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Silva]]></surname>
<given-names><![CDATA[Ivonne]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Ramírez]]></surname>
<given-names><![CDATA[Sonia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Aguilar]]></surname>
<given-names><![CDATA[Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shamah-Levy]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Dommarco]]></surname>
<given-names><![CDATA[Juan A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Infantil de México Federico Gómez Unidad de Epidermiología Clínica ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Salud Pública Centro de Investigación en Nutrición y Salud ]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>58</volume>
<numero>6</numero>
<fpage>617</fpage>
<lpage>628</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0036-36342016000600617&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0036-36342016000600617&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0036-36342016000600617&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Objective: To assess the validity of a 140-item semiquantitative food frequency questionnaire (SFFQ), in Mexican adolescents and adults.  Materials and methods: Dietary intakes using a SFFQ and two 24-hour dietary recalls (24DRs), in nonconsecutive days during the same week were measured from 178 adolescents and 230 adults participating in the Mexican National Health and Nutrition Survey-2012.Validity was evaluated using correlation coefficients (CC),deattenuated CC, linear regression models, cross-classification analysis, and the Bland-Altman method.  Results: In adults, deattenuated correlation coefficients between the SFFQ and the 24DRs ranged from 0.30 for folate to 0.61 for saturated fat. In addition, 63% adults and 62% adolescents were classified in the same and adjacent quartile of nutrient intake when comparing data from SFFQ and 24DRs.  Conclusions: The SFFQ had moderate validity for energy, macronutrients and micronutrients. It also had good validity to rank individuals according to their dietary intake of different nutrients.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Objetivo: Evaluar la validez de un cuestionario de frecuencia de consumo de alimentos semicuantitativo (CFA), en adolescentes y adultos mexicanos.  Material y métodos: Se evaluó la ingesta de alimentos de 178 adolescentes y 230 adultos que participaron en la Encuesta Nacional de Salud y Nutrición-2012, de México, mediante un CFA y el promedio de dos recordatorios de 24-horas (24DRs). La validez se evaluó utilizando coeficientes de correlación, coeficientes de correlación corregidos (CCC) y análisis de clasificación.  Resultados: En adultos, los CCC entre el CFA y el promedio de los 24DRs estuvieron entre 0.30 para folatos y 0.61 para grasas saturadas. Adicionalmente, 63% de los adultos y 62% de los adolescentes fueron clasificados en el mismo o adyacente cuartil cuando fueron comparados los datos del CFA y el 24DR.  Conclusión: El CFA mostró una validez moderada para energía, macronutrimentos y micronutrimentos. Además, mostró buena validez para clasificar a los individuos de acuerdo con su ingesta dietética.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[food frequency questionnaire]]></kwd>
<kwd lng="en"><![CDATA[validity]]></kwd>
<kwd lng="en"><![CDATA[adult]]></kwd>
<kwd lng="en"><![CDATA[adolescents]]></kwd>
<kwd lng="en"><![CDATA[survey]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="es"><![CDATA[cuestionario de frecuencia de consumo]]></kwd>
<kwd lng="es"><![CDATA[validez]]></kwd>
<kwd lng="es"><![CDATA[adultos]]></kwd>
<kwd lng="es"><![CDATA[adolescentes]]></kwd>
<kwd lng="es"><![CDATA[encuestas]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
</kwd-group>
</article-meta>
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