- Study guides, Revision notes & Summaries

Which of the following can be thought of as a failure of the comparison group to reflect the counterfactual experience of the exposed group? systematic difference difference b/w groups being compared that distorts the true association b/w an exposure and dz; an *inherent characteristic of the population -occurs when the risk of dz in the unexposed group does not equal the risk of dz in the exposed group had they been unexposed which means that the difference in dz risk b/w the exposed and ...