<?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>2504-3145</journal-id>
<journal-title><![CDATA[Portuguese Journal of Public Health]]></journal-title>
<abbrev-journal-title><![CDATA[Port J Public Health]]></abbrev-journal-title>
<issn>2504-3145</issn>
<publisher>
<publisher-name><![CDATA[Escola Nacional de Saúde Pública]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2504-31452025000100038</article-id>
<article-id pub-id-type="doi">10.1159/000543728</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[World Health Organization&#8217;s Well-Being Index - WHO-5: Psychometric Performance of the Portuguese Version for Adolescents]]></article-title>
<article-title xml:lang="pt"><![CDATA[World Health Organization&#8217;s Well-Being Index -WHO-5: desempenho psicométrico da versão portuguesa em adolescentes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[Paula Saraiva]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martin]]></surname>
<given-names><![CDATA[Miguel Vieira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Azevedo]]></surname>
<given-names><![CDATA[Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodrigues]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Sofia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Beira Interior Department of Psychology and Education ]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD)  ]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Beira Interior Faculty of Health Sciences RISE-Health, Department of Medical Sciences]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Unidade Local de Saúde Cova da Beira Pediatrics Department ]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,University of Beira Interior Research Center for Business Sciences ]]></institution>
<addr-line><![CDATA[Covilhã ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2025</year>
</pub-date>
<volume>43</volume>
<numero>1</numero>
<fpage>38</fpage>
<lpage>46</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2504-31452025000100038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2504-31452025000100038&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2504-31452025000100038&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  The World Health Organization&#8217;s Well-Being Index (WHO-5) is a five-item scale designed to measure psychological well-being and is considered effective in detecting depressive symptoms. This scale was translated and validated in more than 30 languages and is used in clinical practice and research worldwide. In Portugal, validation of this scale has yet to be done. This study aimed to analyse the psychometric performance of the WHO-5 scale in the setting of a Portuguese adolescent population.  Methods:  An observational cross-sectional survey-based study was carried out to assess the emotional state of adolescents resorting to the WHO-5 scale. A sample of 1,916 elementary and secondary school students from grades 7-12 was used.  Results:  The WHO-5 median score was 17 (14-20), and the best scores were found in males (p &lt; 0.001), in those with no health issues (p &lt; 0.001), those who slept well (p &lt; 0.001), those who practiced sports (p &lt; 0.001), and those who had no difficulties making friends (p &lt; 0.001). Results from the answers to the WHO-5 questionnaire showed good internal consistency with a Cronbach alpha value of 0.80, and a confirmatory factor analysis supported the unidimensional structure of the questionnaire, which was consistent with a valid scale for the study sample.  Conclusion:  This study showed that the Portuguese version of the WHO-5 can assess psychological well-being in adolescents. The WHO-5 is a simple and readily useable scale that can be applied in routine consultations for screening the emotional state of adolescents and early detection of signs of mental health problems.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  O índice de bem-estar da Organização Mundial de Saúde (WHO-5) é uma escala com 5 itens que foi projetada para medir o bem-estar psicológico e foi considerada eficaz na deteção de sinais de depressão. Esta escala foi traduzida em mais de 30 línguas e é usada na prática clínica e em investigação em todo o mundo. Em Portugal a validação desta escala ainda não foi realizada. O objetivo desde estudo é analisar o desempenho psicométrico da escala WHO-5 numa população adolescente portuguesa.  Método:  Estudo transversal observacional baseado em questionários, para avaliar o estado emocional de adolescentes recorrendo à escala WHO-5. Foi obtida uma amostra de 1916 estudantes do ensino básico e secundário, do 7º aos 12º anos de escolaridade.  Resultados:  A pontuação mediana da WHO-5 foi de 17 (14-20) e as pontuações mais altas foram encontradas em adolescentes do género masculino (p &lt; 0.001), naqueles sem problemas de saúde (p &lt; 0.001), que dormiam melhor (p &lt; 0.001), que praticavam desporto (p &lt; 0.001) e naqueles que não tinham dificuldade em fazer amigos (p &lt; 0.001). Os resultados do questionário WHO-5 demonstraram uma boa consistência interna, com valor de alfa de Cronbach de 0.80 e a análise fatorial confirmatória suportou a unidimensionalidade do questionário, que em conjunto permitiu concluir pela validez da escala nesta amostra.  Conclusão:  Este estudo concluiu que a versão portuguesa do WHO-5 pode ser utilizada para avaliar o bem-estar psicológico de adolescentes. A WHO-5 é uma escala simples e de aplicação fácil, que pode ser usada em consultas de rotina para rastrear o estado emocional dos adolescentes e detetar precocemente sinais de problemas de saúde mental.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[WHO-5]]></kwd>
<kwd lng="en"><![CDATA[Psychometric performance]]></kwd>
<kwd lng="en"><![CDATA[Portuguese version]]></kwd>
<kwd lng="en"><![CDATA[Adolescent population]]></kwd>
<kwd lng="pt"><![CDATA[WHO-5]]></kwd>
<kwd lng="pt"><![CDATA[Desempenho psicométrico]]></kwd>
<kwd lng="pt"><![CDATA[Versão portuguesa]]></kwd>
<kwd lng="pt"><![CDATA[População adolescente]]></kwd>
</kwd-group>
</article-meta>
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