What is 'epidemiology'? Epidemiology is defined as the study of the distribution and determinants of disease in populations. Clinical epidemiology is the study of the distribution and determinants of ...

Randomized clinical trials and large-scale, cohort studies continue to have a critical role in generating evidence in cardiovascular medicine; however, the increasing concern is that ballooning costs ...

This is a preview. Log in through your library . Abstract Recent work has extended the methods for the analysis of nested case-control studies to accommodate a broad variety of risk set sampling ...

Suppose that a cohort of individuals is to be followed in order to relate failure rates to preceding covariate histories. A design is proposed which involves covariate data only for cases experiencing ...

Correspondence to Dr Kaitlin H Wade, Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK; Kaitlin.Wade{at}bristol.ac.uk Kujala provides an insightful review contesting ...