Michelle Saaibi Meléndez, Felipe Botero-Rodríguez, Carlos Javier Rincón Rodríguez
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引用次数: 0
Abstract
Objectives.: This article introduces randomized clinical trials and basic concepts of statistical inference. We present methods for calculating the sample size by outcome type and the hypothesis to be tested, together with the code in the R programming language. We describe four methods for adjusting the original sample size for interim analyses. We sought to introduce these topics in a simple and concrete way, considering the mathematical expressions that support the results and their implementation in available statistical programs; therefore, bringing health students closer to statistics and the use of statistical programs, which are aspects that are rarely considered during their training.
期刊介绍：
La Revista Peruana de Medicina Experimental y Salud Pública (RPMESP) es el órgano oficial de difusión científica del Instituto Nacional de Salud (INS) del Perú. Es una publicación arbitrada por pares, de periodicidad trimestral, de ámbito y difusión mundial, indizada en MEDLINE/Index Medicos, SCOPUS, EMBASE, SciELO Salud Pública y otras bases de datos internacionales. La RPMESP es distribuida en su versión impresa y electrónica, con acceso gratuito a texto completo. La RPMESP publica artículos referidos a temas del ámbito biomédico y de salud pública, resaltando aportes prácticos, que contribuyan a mejorar la situación de salud del país y de la región. Propicia el intercambio de la experiencia científica en salud entre instituciones y personas dedicadas a la investigación dentro y fuera del Perú a fin de promover el avance y la aplicación de la investigación en salud.
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