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      Confiabilidade (teste-reteste) de um questionário simplificado para triagem de adolescentes com comportamentos de risco para transtornos alimentares em estudos epidemiológicos Translated title: Test-retest reliability of a simplified questionnaire for screening adolescents with risk behaviors for eating disorders in epidemiologic studies

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          Abstract

          INTRODUÇÃO: É crescente o número de adolescentes apresentando comportamentos alimentares anormais com o objetivo de alcançar o atual ideal estético de magreza, podendo comprometer o estado nutricional nesta fase de crescimento intenso. Ressalta-se a necessidade de instrumentos simples para investigação do problema em estudos populacionais. OBJETIVOS: Avaliar a confiabilidade de um questionário simplificado para investigar comportamentos de risco para transtornos alimentares (TA) entre adolescentes. MÉTODOS: O questionário, contendo duas perguntas, sendo a última subdividida em quatro questões, sobre freqüência de episódios de compulsão alimentar, uso de laxantes, diuréticos e vômitos auto-induzidos e hábito de consumir dietas restritivas, foi aplicado em dois momentos (teste-reteste), com distância de 15 dias, em 195 estudantes (70 % meninas) de uma escola pública de Niterói, RJ, com idade entre 12 a 19,9 anos. A confiabilidade das perguntas foi avaliada utilizando o coeficiente kappa ponderado e seus respectivos intervalos de confiança (IC) de 95% e kappa ajustado para freqüência. RESULTADOS: Os valores de kappa ajustado para freqüência para os comportamentos menos freqüentes foram: 0,93 para o uso de laxantes, 0,97 para o uso de diuréticos e 0,92 para vômito auto induzido. Para os comportamentos de risco mais freqüentes como episódios de compulsão alimentar e hábito de fazer dieta restritiva encontrou-se valores de kappa ponderado 0,50 e 0,61, respectivamente. CONCLUSÃO: A confiabilidade do questionário foi boa, com melhores resultados para investigar comportamentos menos freqüentes.

          Translated abstract

          INTRODUCTION: The number of people presenting abnormal eating behaviors based on the habit of going on strict diets and taking measures to compensate food consumption (use of laxatives, diuretics, and self-induced vomiting) is growing. There is a clear need for simple investigative tools in population-based studies. OBJECTIVE: Evaluate the reliability of a simplified questionnaire to investigate risk behaviors for eating disorders (ED) among adolescents. METHODS: The questionnaire had two questions: the second question was subdivided into four other ones, about the frequency of binge eating episodes, the use of laxatives and diuretics, self-induced vomiting, and strict dieting. It was applied in two moments (test-retest), with an interval of 15 days between the two assessments, in 195 students (70% girls) aged from 12 to 19.9 years, from a Niterói/RJ public school. The reliability of the questions was assessed through the weighted Kappa coefficient and their 95% respective confidence intervals (CI) and frequency adjusted kappa. RESULTS: Frequency-adjusted kappa values for less frequent behaviors were: 0.93 for the use of laxatives, 0.97 for the use of diuretics and 0.92 for self-induced vomiting. For the more frequent risk behaviors for ED such as binge eating episodes and restrictive dieting, weighted Kappa coefficients were 0.50 and 0.61, respectively. CONCLUSIONS: The reliability of the questionnaire was good, with better results for investigating less frequent behaviors.

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          Most cited references40

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          Physical Status: The Use and Interpretation of Antropometry

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            The reliability of the Eating Disorder Examination-Self-Report Questionnaire Version (EDE-Q).

            This research investigated the internal consistency and test-retest reliability of the Eating Disorder Examination-Self-Report Questionnaire Version (EDE-Q), a 41-item measure adapted from the Eating Disorder Examination (EDE). The EDE is a structured clinical interview assessing the key behavioral features and associated psychopathology of eating disorders. Results indicated excellent internal consistency and 2-week test-retest reliability for the four subscales of the EDE-Q: Restraint, Weight Concern, Shape Concern, and Eating Concern. There was somewhat less stability in the items measuring the occurrence and frequency of the key behavioral features of eating disorders. Overall, results support the psychometric adequacy of the EDE-Q.
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              Physical Status: the use and interpretation of anthropometric

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                Author and article information

                Journal
                rbepid
                Revista Brasileira de Epidemiologia
                Rev. bras. epidemiol.
                Associação Brasileira de Saúde Coletiva (Rio de Janeiro, RJ, Brazil )
                1415-790X
                1980-5497
                September 2008
                : 11
                : 3
                : 393-401
                Affiliations
                [01] Rio de Janeiro orgnameUniversidade Federal do Rio de Janeiro orgdiv1Instituto de Nutrição Josué de Castro Brazil
                Article
                S1415-790X2008000300006 S1415-790X(08)01100306
                10.1590/S1415-790X2008000300006
                93d5413b-91d3-440f-a26d-e25f3543ba0f

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

                History
                : 30 April 2008
                : 06 May 2005
                : 21 May 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 24, Pages: 9
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                SciELO Public Health

                Self URI: Texto completo somente em PDF (PT)
                Self URI: Full text available only in PDF format (EN)
                Categories
                Artigos Originais

                Transtornos alimentares,Adolescentes,Confiabilidade de questionário,Eating disorders,Adolescents,Questionnaire reliability

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