<?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>1679-4974</journal-id>
<journal-title><![CDATA[Epidemiologia e Serviços de Saúde]]></journal-title>
<abbrev-journal-title><![CDATA[Epidemiol. Serv. Saúde]]></abbrev-journal-title>
<issn>1679-4974</issn>
<publisher>
<publisher-name><![CDATA[Secretaria de Vigilância em Saúde e Ambiente - Ministério da Saúde do Brasil]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1679-49742021000100060</article-id>
<article-id pub-id-type="doi">10.1590/s1679-49742021000100026</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Proposta de classificação dos diferentes tipos de estudos epidemiológicos descritivos]]></article-title>
<article-title xml:lang="es"><![CDATA[Propuesta de clasificación de los diferentes tipos de estudios epidemiológicos descriptivos]]></article-title>
<article-title xml:lang="en"><![CDATA[Proposal for classifying the different types of descriptive epidemiological studies]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Merchán-Hamann]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tauil]]></surname>
<given-names><![CDATA[Pedro Luiz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Brasília Faculdade de Ciências da Saúde ]]></institution>
<addr-line><![CDATA[Brasília DF]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade de Brasília Faculdade de Medicina ]]></institution>
<addr-line><![CDATA[Brasília DF]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>30</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_arttext&amp;pid=S1679-49742021000100060&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_abstract&amp;pid=S1679-49742021000100060&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_pdf&amp;pid=S1679-49742021000100060&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A categoria dos estudos epidemiológicos descritivos é tema relevante, uma vez que existem inconsistências na literatura quanto a sua nomenclatura e classificação. Foram revistos livros de textos acadêmicos de epidemiologia, 19 estrangeiros e seis nacionais, sendo o critério principal tê-los disponíveis para revisão detalhada dos capítulos de epidemiologia descritiva e tipos de estudo. Em 11 livros, os autores dão prioridade aos estudos analíticos. Doze textos estrangeiros e dois brasileiros incluem estudos descritivos, apesar de a maioria não explicitar uma categoria específica com esse nome. Propõe-se uma classificação com base nas respostas a questões norteadoras de pesquisa, incluindo os seguintes tipos de estudos: relato de caso, série de casos, coorte clínica, estudo de prevalência, estudo de incidência (coorte) e estudo ecológico descritivo. Discutem-se as potencialidades do seu uso, a implementação de novos métodos de análise e sua relevância na vigilância à saúde.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La categoría de estudios epidemiológicos descriptivos es relevante para los servicios de atención de salud ya que existen inconsistencias en la literatura con relación a su nomenclatura y clasificación. Se revisaron libros de texto académicos de epidemiología con ejemplares disponibles para revisión detallada de capítulos de epidemiología descriptiva y tipos de estudio: 19 extranjeros y 6 brasileños. En 11 libros, los autores no consideran ningún estudio que no sea analítico. Doce textos extranjeros y dos brasileños abarcan estudios descriptivos, aunque la mayoría no reconozca esa categoría explícitamente. Se propone una clasificación basada en las respuestas a preguntas orientadoras de la investigación incluyendo los siguientes tipos de estudios: relato de caso, serie de casos y cohorte clínica; cuatro de ámbito poblacional/comunitario: estudio de prevalencia, estudio de incidencia (cohorte), estudio descriptivo ecológico. Se discuten las potencialidades del uso, la implementación de nuevos métodos de análisis y su relevancia en la vigilancia epidemiológica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Descriptive epidemiological studies are of relevance, given that there are inconsistencies in the literature with regard to their nomenclature and classification. We reviewed 19 international and six national academic textbooks on epidemiology, where the main criterion was to have them available in order to undertake an in-depth review of chapters on descriptive epidemiology and study types. In 11 books, the authors prioritize analytical studies. Twelve foreign texts and two from Brazil include descriptive studies, although the majority did not specifically refer to a category with this name. We propose a classification based on the answers to research questions, including the following types of study: case report, case series, clinical cohort, prevalence study, incidence study (cohort) and descriptive ecological study. We discuss potential uses, implementation of novel data analysis methods and their relevance in health surveillance.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Estudos Epidemiológicos]]></kwd>
<kwd lng="pt"><![CDATA[Estudos Descritivos]]></kwd>
<kwd lng="pt"><![CDATA[Classificação]]></kwd>
<kwd lng="es"><![CDATA[Estudios Epidemiológicos]]></kwd>
<kwd lng="es"><![CDATA[Estudios Descriptivos]]></kwd>
<kwd lng="es"><![CDATA[Clasificación]]></kwd>
<kwd lng="en"><![CDATA[Epdemiological Studies]]></kwd>
<kwd lng="en"><![CDATA[Descriptive Studies]]></kwd>
<kwd lng="en"><![CDATA[Classification]]></kwd>
</kwd-group>
</article-meta>
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