{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T12:19:48Z","timestamp":1769084388255,"version":"3.49.0"},"reference-count":48,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2012,8,29]],"date-time":"2012-08-29T00:00:00Z","timestamp":1346198400000},"content-version":"vor","delay-in-days":241,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical &amp; Translational All"],"published-print":{"date-parts":[[2012,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Asthma is a frequent chronic respiratory disease in both children and adults. However, few data on asthma prevalence are available in Portugal. The Portuguese National Asthma Survey is the first nationwide study that uses standardized methods. We aimed to estimate the prevalence of current asthma in the Portuguese population and to assess the association between \u2018Current asthma\u2019 and comorbidities such as upper airways disease.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A cross\u2010sectional, population\u2010based, telephone interview survey including all municipalities of Portugal was undertaken. Participants were randomly selected to answer a questionnaire based on the Portuguese version of the GA<jats:sup>2<\/jats:sup>LEN survey. \u2018Current asthma\u2019 was defined as self\u2010reported lifetime asthma and at least one of 3 symptoms in the last 12\u2009months: wheezing, waking with breathlessness or having an asthma attack.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Data were obtained for 6 003 respondents, with mean age of 38.9 (95%CI 38.2\u201039.6) years and 57.3% females. In the Portuguese population, the prevalence of \u2018Current asthma\u2019 was 6.8% (95%CI 6.0\u20107.7) and of \u2018Lifetime asthma\u2019 was 10.5% (95%CI 9.5\u201011.6) Using GA<jats:sup>2<\/jats:sup>LEN definition for asthma, our prevalence estimate was 7.8% (95%CI 7.0\u20108.8). Rhinitis had a strong association with asthma (Adjusted OR 3.87, 95%CI 2.90\u20105.18) and the association between upper airway diseases and asthma was stronger in patients with both rhinitis and sinusitis (Adjusted OR 13.93, 95%CI 6.60\u201029.44).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Current asthma affects 695 000\u00a0Portuguese, with a prevalence of 6.8%. People who reported both rhinitis and sinusitis had the highest risk of having asthma.<\/jats:p><\/jats:sec>","DOI":"10.1186\/2045-7022-2-15","type":"journal-article","created":{"date-parts":[[2012,8,29]],"date-time":"2012-08-29T16:14:35Z","timestamp":1346256875000},"source":"Crossref","is-referenced-by-count":70,"title":["Prevalence of asthma in Portugal \u2010 The Portuguese National Asthma Survey"],"prefix":"10.1002","volume":"2","author":[{"given":"Ana","family":"Sa\u2010Sousa","sequence":"first","affiliation":[{"name":"Center for Research in Health Technologies and Information Systems Faculdade de Medicina da Universidade do Porto Porto Portugal"}]},{"given":"M\u00e1rio","family":"Morais\u2010Almeida","sequence":"additional","affiliation":[{"name":"Allergy and Clinical Immunology Division Unit Hospital CUF\u2010Descobertas Lisbon Portugal"},{"name":"Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica LIsbon Portugal"}]},{"given":"Luis Filipe","family":"Azevedo","sequence":"additional","affiliation":[{"name":"Center for Research in Health Technologies and Information Systems Faculdade de Medicina da Universidade do Porto Porto Portugal"},{"name":"Health Information and Decision Sciences Department Faculdade de Medicina da Universidade do Porto Porto Portugal"}]},{"given":"Rosa","family":"Carvalho","sequence":"additional","affiliation":[{"name":"GBN Estudos de Mercado Porto Portugal"}]},{"given":"Tiago","family":"Jacinto","sequence":"additional","affiliation":[{"name":"Center for Research in Health Technologies and Information Systems Faculdade de Medicina da Universidade do Porto Porto Portugal"},{"name":"Health Information and Decision Sciences Department Faculdade de Medicina da Universidade do Porto Porto Portugal"},{"name":"Allergy Unit Hospital and Institute CUF Porto Portugal"}]},{"given":"Ana","family":"Todo\u2010Bom","sequence":"additional","affiliation":[{"name":"Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica LIsbon Portugal"},{"name":"Allergy and Clinical Immunology Division Hospitais da Universidade de Coimbra Coimbra Portugal"}]},{"given":"Carlos","family":"Loureiro","sequence":"additional","affiliation":[{"name":"Sociedade Portuguesa de Alergologia e Imunologia Cl\u00ednica LIsbon Portugal"},{"name":"Allergy and Clinical Immunology Division Hospitais da Universidade de Coimbra Coimbra Portugal"}]},{"given":"Ant\u00f3nio","family":"Bugalho\u2010Almeida","sequence":"additional","affiliation":[{"name":"Cl\u00ednica Universit\u00e1ria de Pneumologia Faculdade de Medicina da Universidade de Lisboa Lisbon Portugal"},{"name":"Coordinator of Comiss\u00e3o de Acompanhamento do Programa Nacional de Controlo da Asma Lisbon Portugal"}]},{"given":"Jean","family":"Bousquet","sequence":"additional","affiliation":[{"name":"H\u00f4pital Arnaud de Villeneuve Centre Hospitalier Universitaire Montpellier Montpellier France"}]},{"given":"Jo\u00e3o Almeida","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Center for Research in Health Technologies and Information Systems Faculdade de Medicina da Universidade do Porto Porto Portugal"},{"name":"Health Information and Decision Sciences Department Faculdade de Medicina da Universidade do Porto Porto Portugal"},{"name":"Allergy Unit Hospital and Institute CUF Porto Portugal"},{"name":"Allergy and Clinical Immunology Division Hospital S. 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