What is the importance of calculating sample size?

Patino1,2, Cecilia Maria; Ferreira1,3, Juliana Carvalho

doi:http://dx.doi.org/10.1590/S1806-37562016000000114

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Educação Continuada: Metodologia Científica

Qual a importância do cálculo do tamanho amostral?

What is the importance of calculating sample size?

Cecilia Maria Patino1,2, Juliana Carvalho Ferreira1,3

DOI: http://dx.doi.org/10.1590/S1806-37562016000000114

1. Divisão de Pneumologia, Instituto do Coração - InCor - Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brasil.
2. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
3. Methods in Epidemiologic, Clinical and Operations Research-MECOR-program, American Thoracic Society/Asociación Latinoamericana del Tórax.