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SciELO - Brasil - Tamanho da amostra em estudos clínicos e experimentais Tamanho da amostra em estudos clínicos e experimentais
Sample Size Estimation in Clinical Research: From Randomized Controlled Trials to Observational Studies
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Improved Sample Size Calculator Website and New Calculators for Your Research | Clinical & Translational Science Institute
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Applying Statistics to Trial Design: Sample Size, Randomization, and Control for Multiple Hypotheses | Basicmedical Key
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PDF] A simple sample size formula for analysis of covariance in randomized clinical trials. | Semantic Scholar
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