What is epidemiology? Changing definitions of epidemiology 1978-2017.

Context: Epidemiology is a discipline which has evolved with the changes taking place in society and the emergence of new diseases and new discipline related to epidemiology. With these evolutions, it is important to understand epidemiology and to analyse the evolution of content of definitions of epidemiology.

Objectives: The main objective of this paper was to identify new definitions of epidemiology available since 1978.

Factors influencing inclusion in digestive cancer clinical trials: A population-based study.

Background: Inclusion in a randomized therapeutic trial represents an optimal therapeutic strategy.

Aims: To determine the influence of demographic characteristics and deprivation on the enrolment of patients in digestive cancer clinical trials.

Methods: Between 2004 and 2010, 4632 patients were recorded by the Burgundy Digestive Cancer Registry.