<?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>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132019000400363</article-id>
<article-id pub-id-type="doi">10.24875/gmm.19004667</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actitudes de los médicos familiares mexicanos sobre el uso de placebos en la práctica clínica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gil-Alfaro]]></surname>
<given-names><![CDATA[Issa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zavala-Cruz]]></surname>
<given-names><![CDATA[Gad Gamed]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-González]]></surname>
<given-names><![CDATA[Azucena Maribel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Aranda]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad de Medicina Familiar 66 ]]></institution>
<addr-line><![CDATA[Veracruz ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad de Medicina Familiar 47 ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Monterrey  ]]></institution>
<addr-line><![CDATA[Monterrey Nuevo León]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Hospital Universitario “Dr. José Eleuterio González” ]]></institution>
<addr-line><![CDATA[ Nuevo León]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>155</volume>
<numero>4</numero>
<fpage>363</fpage>
<lpage>368</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132019000400363&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132019000400363&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132019000400363&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: El uso de placebo se ha extendido en la práctica a pesar de ser polémico. En México, la práctica de medicina familiar es predominante institucional y trabaja con un cuadro básico de medicamentos.  Objetivo: Determinar la frecuencia y actitud del médico familiar en la utilización de placebos en la práctica clínica.  Método: Estudio transversal, observacional, multicéntrico, en 307 médicos familiares con práctica activa, en 27 estados de la República Mexicana. Se usó cuestionario con datos sociodemográficos, preguntas sobre frecuencia de uso y actitudes elaboradas por consenso. Se analizó con chi cuadrada.  Resultados: 75 % utilizó placebos (IC 95 % = 69.7-79.4 %); 122 (39.7 %) placebos puros, principalmente agua (p &lt; 0.05), y 220 (71.6 %) placebos impuros, principalmente vitaminas y exámenes de laboratorio. Los usaron más en pacientes con síntomas físicos no explicados médicamente (178, 45.5 %), incluidos 122 (31.2 %) pacientes “sanos preocupados” o con padecimientos crónicos (40, 12.5 %). Motivos de prescripción: 249 (81 %) por el efecto psicológico, cuando demostraron beneficio (176, 57 %), aun cuando implicara engaño (78, 25 %) o evidencia de eficacia insuficiente (57, 19 %). El principal motivo fue por insistencia del paciente.  Conclusiones: Se utilizaron más placebos impuros, principalmente en pacientes sanos preocupados y en aquellos con padecimientos crónicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: The use of placebo has spread in clinical practice despite being controversial. In Mexico, the practice of family medicine is predominantly institutional and works with an essential medications list.  Objective: To determine the frequency and family doctor attitude regarding the use of placebos in clinical practice.  Method: Cross-sectional, observational, multicenter study of 307 family doctors with active practice in 27 states of the Mexican Republic. A questionnaire was used with sociodemographic data and consensus-developed questions about frequency of use and attitudes. For analysis, the square-chi test was used.  Results: 75% used placebos (95% CI=69.7-79.4%); 122 (39.7%) used pure placebos, mainly water (p &lt; 0.05), and 220 (71.6%), impure placebos, mainly vitamins and laboratory tests. They were used more in patients with medically unexplained physical symptoms (178, 45.5%), including 122 (31.2%) “healthy worried” patients, or who had chronic conditions (40, 12.5%). Reasons for prescription: 249 (81%) for the psychological effect, when they showed benefit (176, 57%), even when it implied deceiving (78, 25%) or insufficient evidence of efficacy (57, 19%). The main reason was because of patient insistence.  Conclusions: More impure placebos were used, mainly in healthy worried patients and in those with chronic conditions.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Placebos]]></kwd>
<kwd lng="es"><![CDATA[Efecto placebo]]></kwd>
<kwd lng="es"><![CDATA[Medicina familiar]]></kwd>
<kwd lng="es"><![CDATA[Medicina comunitaria]]></kwd>
<kwd lng="es"><![CDATA[Atención primaria de salud]]></kwd>
<kwd lng="en"><![CDATA[Placebos]]></kwd>
<kwd lng="en"><![CDATA[Placebo effect]]></kwd>
<kwd lng="en"><![CDATA[Family medicine]]></kwd>
<kwd lng="en"><![CDATA[Community-based medicine primary health care]]></kwd>
</kwd-group>
</article-meta>
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