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      Validação do Teste de Controle da Asma em português para uso no Brasil: validation for use in Brazil Translated title: Portuguese-language version of the Asthma Control Test

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          Abstract

          OBJETIVO: Desenvolver e validar uma versão do Asthma Control Test (ACT, Teste de Controle da Asma) em português para uso no Brasil. MÉTODOS: Foram estudados 290 pacientes ambulatoriais com asma maiores que 12 anos. Os pacientes responderam ao ACT e foram examinados por um pneumologista para avaliar o controle da asma em duas visitas. Na primeira visita, também realizaram prova de função pulmonar. A segunda visita foi realizada ao menos quatro semanas depois da primeira. RESULTADOS: Utilizando-se como ponto de corte um escore de 18 para diferenciar asma controlada de asma não controlada, foram encontradas sensibilidade de 93%, especificidade de 74%, valor preditivo negativo de 86% e valor preditivo positivo de 85%. As razões de verossimilhança positiva e negativa foram, respectivamente, 3,58 e 0,09. O questionário tem grande capacidade de discriminar asma controlada de asma não controlada, com uma área sob a curva ROC de 0,904. Os pacientes que mantiveram os sintomas estáveis na segunda avaliação tiveram pontuação semelhante no questionário, indicando uma boa reprodutibilidade teste-reteste, com um coeficiente de correlação intraclasse de 0,93. Os pacientes que melhoraram os sintomas na segunda avaliação tiveram pontuação do questionário significativamente melhor, indicando uma boa responsividade do questionário para identificar mudanças no controle da doença. CONCLUSÕES: A versão em português do ACT apresentou boa reprodutibilidade teste-reteste e foi capaz de discriminar o nível de controle da asma, assim como detectar mudanças no controle da asma em uma população de baixa escolaridade e renda familiar em um serviço público de saúde no Brasil.

          Translated abstract

          OBJECTIVE: To develop and validate a Portuguese-language version of the Asthma Control Test (ACT) for use in Brazil. METHODS: The study comprised 290 asthma outpatients over 12 years of age. The patients completed the ACT questionnaire and had an appointment with a pulmonologist in order to assess asthma control in two visits. In the first visit, the patients also underwent spirometry. The second visit took place at least four weeks later. RESULTS: We found that a cut-off score of 18 points-to differentiate between subjects with controlled asthma and those with uncontrolled asthma-had a sensitivity of 93%, a specificity of 74%, a negative predictive value of 86% and a positive predictive value of 85%. The positive and negative likelihood ratios were 3.58 and 0.09, respectively. The questionnaire has an outstanding capacity to differentiate uncontrolled asthma from controlled asthma, with an area under the ROC curve of 0.904. The patients whose symptoms remained stable between the two visits had similar scores, demonstrating good test-retest reproducibility, with an intraclass correlation coefficient of 0.93. The patients whose symptoms improved in the second visit had significantly higher scores, demonstrating good responsiveness of the questionnaire in the identification of changes in disease control. CONCLUSIONS: The Portuguese-language version of the ACT showed good test-retest reproducibility and was capable of discriminating the levels of asthma control and detecting changes in asthma control in a population of patients with a low level of education and low family income at a public health facility in Brazil.

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          Most cited references28

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          Cross-cultural adaptation of health-related quality of life measures: Literature review and proposed guidelines

          Clinicians and researchers without a suitable health-related quality of life (HRQOL) measure in their own language have two choices: (1) to develop a new measure, or (2) to modify a measure previously validated in another language, known as a cross-cultural adaptation process. We propose a set of standardized guidelines for this process based on previous research in psychology and sociology and on published methodological frameworks. These guidelines include recommendations for obtaining semantic, idiomatic, experiential and conceptual equivalence in translation by using back-translation techniques and committee review, pre-testing techniques and re-examining the weight of scores. We applied these guidelines to 17 cross-cultural adaptation of HRQOL measures identified through a comprehensive literature review. The reporting standards varied across studies but agreement between raters in their ratings of the studies was substantial to almost perfect (weighted kappa = 0.66-0.93) suggesting that the guidelines are easy to apply. Further research is necessary in order to delineate essential versus optional steps in the adaptation process.
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            Worldwide time trends in the prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and eczema in childhood: ISAAC Phases One and Three repeat multicountry cross-sectional surveys

            Data for trends in prevalence of asthma, allergic rhinoconjunctivitis, and eczema over time are scarce. We repeated the International Study of Asthma and Allergies in Childhood (ISAAC) at least 5 years after Phase One, to examine changes in the prevalence of symptoms of these disorders. For the ISAAC Phase Three study, between 2002 and 2003, we did a cross-sectional questionnaire survey of 193,404 children aged 6-7 years from 66 centres in 37 countries, and 304,679 children aged 13-14 years from 106 centres in 56 countries, chosen from a random sample of schools in a defined geographical area. Phase Three was completed a mean of 7 years after Phase One. Most centres showed a change in prevalence of 1 or more SE for at least one disorder, with increases being twice as common as decreases, and increases being more common in the 6-7 year age-group than in the 13-14 year age-group, and at most levels of mean prevalence. An exception was asthma symptoms in the older age-group, in which decreases were more common at high prevalence. For both age-groups, more centres showed increases in all three disorders more often than showing decreases, but most centres had mixed changes. The rise in prevalence of symptoms in many centres is concerning, but the absence of increases in prevalence of asthma symptoms for centres with existing high prevalence in the older age-group is reassuring. The divergent trends in prevalence of symptoms of allergic diseases form the basis for further research into the causes of such disorders.
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              Standardization of Spirometry, 1994 Update. American Thoracic Society.

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                Author and article information

                Journal
                jbpneu
                Jornal Brasileiro de Pneumologia
                J. bras. pneumol.
                Sociedade Brasileira de Pneumologia e Tisiologia (São Paulo, SP, Brazil )
                1806-3756
                April 2010
                : 36
                : 2
                : 159-166
                Affiliations
                [02] Salvador BA orgnameUniversidade Federal da Bahia orgdiv1Faculdade de Medicina da Bahia orgdiv2Programa de Controle da Asma e Rinite Alérgica na Bahia Brasil
                [01] São Paulo SP orgnameUniversidade de São Paulo orgdiv1Faculdade de Medicina orgdiv2Hospital das Clínicas Brasil
                [03] Salvador BA orgnameUniversidade Federal da Bahia orgdiv1Faculdade de Medicina da Bahia Brasil
                Article
                S1806-37132010000200002 S1806-3713(10)03600202
                103a6c47-ee5e-45cc-ac3b-3f966dd22812

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 31 July 2009
                : 17 November 2009
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 8
                Categories
                Artigos Originais

                Asma,Signs and symptoms,Validation studies,Estudos de validação,Questionnaires,Questionários,Sinais e sintomas,Asthma

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