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      Prevalence of chronic obstructive pulmonary disease and associated factors: the PLATINO Study in São Paulo, Brazil Translated title: Prevalência de doença pulmonar obstrutiva crônica e fatores associados: Estudo PLATINO em São Paulo, Brasil

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          Abstract

          Chronic obstructive pulmonary disease (COPD) is now a major public health concern; deaths attributable to COPD in Latin America have increased by 65.0% in the last decade. This study was aimed at evaluating COPD prevalence and associated factors in adults (> 40 years) living in Greater Metropolitan São Paulo, Brazil. The study is part of the Proyecto Latinoamericano de Investigación en Obstrucción Pulmonar (The PLATINO Project), a multi-center survey on COPD burden in Latin America, with São Paulo as the first center where the project has been carried out. A population-based sample was selected in multiple stages. Spirometry tests were performed in each subject pre- and post-bronchodilator and COPD was mainly defined as the ratio of forced expiratory volume to forced vital capacity below 70.0% (fixed ratio definition). Other spirometric criteria were also used for the diagnosis of COPD. COPD prevalence was 15.8% (95%CI: 13.5-18.1) using the fixed ratio definition. COPD was positively associated with age and smoking and inversely with body mass index. Utilization of different COPD spirometry criteria resulted in different percentages of COPD, but similar associated factors.

          Translated abstract

          A doença pulmonar obstrutiva crônica (DPOC) é hoje um grande desafio para a saúde pública; as mortes atribuídas a DPOC na América Latina aumentaram 65,0% na última década. Avaliou-se a prevalência de DPOC e fatores associados em uma população adulta (> 40 anos) da grande área metropolitana de São Paulo, Brasil. Esse estudo faz parte do Proyecto Latinoamericano de Investigación en Obstrucción Pulmonar (Projeto PLATINO), um estudo multicêntrico sobre DPOC em grandes cidades da América Latina, tendo sido São Paulo o primeiro centro onde o projeto se realizou. O estudo foi transversal de base populacional e amostragem em múltiplos estágios. Os indivíduos realizaram espirometria, e DPOC foi basicamente definida como a razão entre o volume expiratório forçado em um segundo (VEF1) e a capacidade vital forçada (CVF) abaixo de 70,0% (relação fixa). Outros critérios espirométricos foram também utilizados para o diagnóstico de DPOC. A prevalência de DPOC foi de 15,8% (IC95%: 13,5-18,1) usando-se o critério mencionado acima. DPOC associou-se positivamente com idade e tabagismo e inversamente com o índice de massa corporal. O uso de diferentes critérios espirométricos acarretou mudanças na freqüência de DPOC, mas não nos fatores associados.

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          Most cited references28

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          Epidemiology Standardization Project (American Thoracic Society).

          B G Ferris (1978)
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            Population impact of different definitions of airway obstruction.

            There is currently no consensus on the criteria for diagnosing chronic obstructive pulmonary disease. This study evaluated the impact of different definitions of airway obstruction on the estimated prevalence of obstruction in a population-based sample. Using the Third National Health and Nutrition Examination Survey, obstructive airway disease was defined using the following criteria: 1) self-reported diagnosis of chronic bronchitis or emphysema; 2) forced expiratory volume in one second (FEV1)/forced vital capacity (FVC) 50 yrs, the fixed ratio criteria produced the highest rate estimates. For all subgroups tested, the GOLD Stage II criteria produced lower estimates than other spirometry-based definitions. Different definitions of obstruction may produce prevalence estimates that vary by >200%. International opinion leaders should agree upon a clear definition of chronic obstructive pulmonary disease that can serve as a population-based measurement criterion as well as a guide to clinicians.
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              Standardization of spirometry, 1994 update

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                csp
                Cadernos de Saúde Pública
                Cad. Saúde Pública
                Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (Rio de Janeiro )
                1678-4464
                October 2005
                : 21
                : 5
                : 1565-1573
                Affiliations
                [1 ] Universidade Federal de Pelotas Brazil
                [2 ] Universidade Federal de São Paulo Brasil
                [3 ] Instituto Nacional de Enfermedades Respiratorias México
                Article
                S0102-311X2005000500030
                10.1590/S0102-311X2005000500030
                8eec7e9d-53b5-4361-bab7-b4bfcbc95827

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielosp.org/scielo.php?script=sci_serial&pid=0102-311X&lng=en
                Categories
                Health Policy & Services

                Public health
                Risk Factors,Tobacco,Pollution,Spirometry,Doença Pulmonar Obstrutiva Crônica,Fatores de Risco,Tabaco,Poluição,Espirometria,Chronic Obstructive Pulmonary Disease

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