Interpretación de los resultados de un ensayo clínico o metaanálisis en angiología y cirugía vascular: odds ratios, riesgo relativo, intervalos de confianza y credibilidad

To present a non-specialised paper in which we outline some of the basic features regarding the interpretation of the results that appear in a meta-analysis or clinical trial; our aim is to do this in an informal manner as far as statistics is concerned, so as to make it easier to understand for readers who are not so familiar with the subject matter. The article includes examples from a number of recently published papers on angiology and vascular surgery which compare the outcomes of angioplasties and endarterectomies performed to correct critical stenoses of the carotid artery.