Multiple regression models are commonly used to control for confounding in epidemiologic research. Parametric regression models, such as multiple logistic regression, are powerful tools to control for ...

2 Swiss Laboratory for Doping Analyses, University Center of Legal Medicine, Geneva and Lausanne, Epalinges, Switzerland Correspondence to Dr Norbert Baume, Swiss Laboratory for Doping Analyses, ...

Unmeasured confounding variables are a common problem in drawing causal inferences in observational studies. A theorem is given which in certain circumstances allows the researcher to draw conclusions ...

I know that I’m supposed to look to Jesus for the answers. I was that kid in Sunday school who, when asked just about any question, would blurt out, “Jesus?” as my answer. When I mull over matters of ...