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- Evandro Silva Freire Coutinho and Geraldo Marcelo da Cunha.
- Departamento de Epidemiologia e Métodos Quantitativos em Saúde, Escola Nacional de Saúde Pública. evandro@ensp.fiocruz.br
- Rev Bras Psiquiatr. 2005 Jun 1;27(2):146-51.
AbstractThe authors present the basic concepts in epidemiology and statistics needed for understanding properly the design and results of controlled clinical trials. Through a set of examples, the concepts of measures of association and effect, statistical significance tests, p-value, confidence interval and statistical power are presented and common their misinterpretations are discussed.
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