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Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2021
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Investigación Epidemiológica: Estudios de caso-control y estudios de cohortes

Authors: González Alba, María;

Investigación Epidemiológica: Estudios de caso-control y estudios de cohortes

Abstract

El objetivo principal de este trabajo es ilustrar cómo tratar los estudios de cohortes y de caso-control en el software estadístico R. En el primer capítulo se hace una introducción a la epidemiología, a la clasificación de los tipos de estudios y a las principales medidas que se aplican en ellos. En el segundo capítulo se profundiza teóricamente en los estudios de cohortes, en las etapas que lo componen y, por último, se reproduce el código de R y se extraen las conclusiones de un estudio de cohortes retrospectivo sobre los factores de riesgo asociados a la gravedad y mortalidad de la enfermedad de COVID-19 en Kazajistán. En el tercer capítulo, se profundiza en los estudios de caso-control y se tratan temas como la selección de los miembros del estudio, además de conocer cómo se lleva a cabo la aplicación de técnicas estadísticas para el tratamiento de estudios de este tipo reproduciendo el código R y extrayendo conclusiones de un estudio de caso-control sobre la búsqueda de factores de riesgo asociados a la infección por Escherichia Coli en un pueblo de Tasmania. En el último capítulo se comparan ambos tipos de estudios y además se dan a conocer algunos estudios híbridos. En el apéndice se incluye código e interpretaciones para estudios complementarios al estudio de cohortes retrospectivo hecho en R en el Capítulo 2.

The aim of this work is to illustrate how to deal with cohort and case-control studies in R statistical software. The first chapter introduces epidemiology, the classification of types of studies, and the main measures used on them. In the second chapter, there is an in-depth theoretical study of cohort studies, finally, the R-code is reproduced and the conclusions of a retrospective cohort study on the risk factors associated with the severity and mortality of COVID-19 disease in Kazakhstan are drawn. In the third chapter, the case-control studies are discussed in depth and topics such as the selection of study members, in addition to knowing how the application of statistical techniques for the treatment of studies of this type is carried out by reproducing the R code and drawing conclusions from a case-control study over the search for risk factors associated with Escherichia Coli infection in a village in Tasmania. In the last chapter, both types of studies are compared and some hybrid studies are also released. The appendix includes code and interpretations for studies complementary to the retrospective cohort study done in R in Chapter 2.

Universidad de Sevilla. Grado en Estadística

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Spain
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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