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2010
- handle: 10670/1.g11eea
- 0034-8910
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Revista de Saúde Pública
Mots-clés
Salud Adolescent Illicit drugs Questionnaires Adolescent Behavior Reproducibility of ResultsSujets proches
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Adelmo de Souza Machado Neto et al., « Reliability of a questionnaire on substance use among adolescent students, Brazil », Revista de Saúde Pública, ID : 10670/1.g11eea
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"OBJECTIVE: To analyze reliability of a self-applied questionnaire on substanceuse and misuse among adolescent students.METHODS: Two cross-sectional studies were carried out for the instrumenttest-retest. The sample comprised male and female students aged 11–19years from public and private schools (elementary, middle, and high schoolstudents) in the city of Salvador, Northeastern Brazil, in 2006. A total of591 questionnaires were applied in the test and 467 in the retest. Descriptivestatistics, the Kappa index, Cronbach’s alpha and intraclass correlation wereestimated.RESULTS: The prevalence of substance use/misuse was similar in both test andretest. Sociodemographic variables showed a “moderate” to “almost perfect”agreement for the Kappa index, and a “satisfactory” (>0.75) consistency forCronbach’s alpha and intraclass correlation. The age which psychoactivesubstances (tobacco, alcohol, and cannabis) were fi rst used and chronologicalage were similar in both studies. Test-retest reliability was found to be a goodindicator of students’ age of initiation and their patterns of substance use.CONCLUSIONS: The questionnaire reliability was found to be satisfactoryin the population studied."