Weighing the Evidence

A vital step in a study like the National Convalescent Plasma Project is to correctly interpret and weigh the evidence. The U.S. Surgeon General's first Smoking and Health report of 1964 is an example of how to effectively interpret large data sets. A copy of the report can be found here


Bradford Hill's Criteria is a set of nine principles that can be used to determine causality in epidemiological evidence. A copy of the Criteria can be found here