This paper reviews problems with the definition and estimation of interactions in epidemiologic studies. Methods for modeling interactions and dose-response also are reviewed, and references to more ...

The Evolving Thoughts blog over at ScienceBlogs has posted an amazing master list of Basic Concepts blog posts from around the Web. Each post covers a topic in science, math, philosophy, or logic, ...

Rapid appraisal is an approach for developing a preliminary, qualitative understanding of a situation. This paper identifies three basic concepts—(1) a system perspective, (2) triangulation of data ...