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      Tradução, adaptação e validação da versão brasileira da escala Marijuana Expectancy Questionnaire Translated title: Translation, adaptation, and validation of the Brazilian version of the Marijuana Expectancy Questionnaire

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          Abstract

          Este estudo apresenta a tradução e a validação do Marijuana Expectancy Questionnaire (MEQ adaptação brasileira), a qual avalia as expectativas de resultados em relação ao uso de maconha, podendo ser importante no tratamento e prognóstico dos dependentes químicos dessa substância. A amostra foi de 400 sujeitos, homens (n = 217) e mulheres (n = 183), usuários de maconha (n = 147) e não-usuários (n = 253). Dentre os usuários, 90 eram dependentes de maconha. A validação semântica utilizou um Comitê de Juízes Especialistas. Na amostra brasileira, aplicaram-se os 78 itens, porém a análise estatística foi a partir da escala reduzida com 55 itens, pois as propriedades psicométricas foram similares. Obteve-se alfa = 0, 89 para as duas escalas. A validade discriminante para a escala reduzida foi, estatisticamente, significativa (p = 0,001). A estabilidade temporal foi examinada numa amostra de 123 sujeitos, com o intervalo de uma semana entre o teste e o reteste, indicando um padrão consistente de resposta ao longo do tempo (r = 0,990). O MEQ - adaptação brasileira apresentou bons resultados psicométricos, podendo avaliar as expectativas de resultados relacionadas ao uso de maconha.

          Translated abstract

          This study presents the translation and validation of the Marijuana Expectancy Questionnaire (MEQ - Brazilian Adaptation), which evaluates the expectancy of results in marijuana use, important for treatment and prognosis related to addiction to this substance. The sample consisted of 400 subjects, 217 males and 183 females, of whom 147 were marijuana users and 253 were non-users. In the user group, 90 subjects were marijuana-dependent. Semantic validation of the MEQ-Brazilian Adaptation was confirmed after evaluation and suggestions by an expert review panel. In the Brazilian sample, 78 items were applied; however, the decision was made for a statistical analysis using the reduced scale (55 items), with similar psychometric properties. For both scales, an alpha = 0.89 was obtained. Discriminant validation of the reduced scale was statistically significant (p = 0.001). Temporal stability was examined using a 123-subject sample with a one-week interval between test and retest, indicating that the instrument obtains a consistent response pattern over time (r = 0.990). MEQ - Brazilian Adaptation presented good psychometric results and can be used in studies that aim to evaluate expectancy of results related to marijuana use.

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          Diagnostic and statistical manual of mental disorders.

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            A motivational model of alcohol use.

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              In search of the Seven Dwarves: issues of measurement and meaning in alcohol expectancy research.

              Discusses substantive issues in predicting drinking patterns from expectancies, as well as issues of content and measurement of the scales developed to measure these expectancies. In recent years, much research has suggested that alcohol expectancies--or the beliefs that individuals hold about the effects of alcohol on their behavior, moods, and emotions--are an important factor in motivating drinking behavior. Although measures of these expectancies have consistently been shown to be correlated with measures of alcohol use, conceptual and methodological problems remain to be addressed. In order to progress in understanding this potentially important psychosocial factor in abusive and nonabusive drinking, alcohol expectancy research, which has been atheoretical in nature, should attend to potential contributions from other areas of research in psychology.
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                Author and article information

                Contributors
                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
                January 2007
                : 23
                : 1
                : 63-73
                Affiliations
                [1 ] Pontifícia Universidade Católica do Rio Grande do Sul Brazil
                [2 ] Pontifícia Universidade Católica do Rio Grande do Sul Brazil
                Article
                S0102-311X2007000100008
                4423517c-cf72-4716-a566-495a716b7dba

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

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                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
                Cannabis,Validation Studies,Questionnaires,Estudos de Validação,Questionários
                Public health
                Cannabis, Validation Studies, Questionnaires, Estudos de Validação, Questionários

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