Causation, bias and confounding: a hitchhiker's guide to the epidemiological galaxy. Part 3: principles of causality in epidemiological research: statistical stability, dose- and duration-response effects, internal and external consistency, analogy and biological plausibility.
Department of Epidemiology, University of Cape Town, Cape Town, South Africa. samshap@mweb.co.za
Samuel
S
Shapiro
D003627:Data Interpretation, Statistical; D015981:Epidemiologic Factors; D006801:Humans