Resumen

MARTIN CONEJERO, Antonio  y  ALONSO GARCIA, Marcos. Analytical observational studies. Angiología [online]. 2023, vol.75, n.6, pp.385-390.  Epub 29-Ene-2024. ISSN 1695-2987.  https://dx.doi.org/10.20960/angiologia.00544.

Observational and analytical epidemiological studies are those that allow the study of causal relationships and associations between variables, without the researcher assigning or introducing the study factor into the sample. That is, the researcher limits himself to observing how an exposure gives rise to an outcome. There are different types of observational studies, some prospective and others retrospective. In this article we will see some of the most common designs, such as the cohort study and the case-control study.

Palabras clave : Analytical; Observational; Cases-controls; Cohorts.

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