Hello, and welcome to Module 6.
In this module, we will continue our discussion
of threats to internal validity.
We're going to start talking about confounding,
which is actually one of my favorite parts
of EPI methods to think about.
This is the first of three modules
in which we'll discuss confounding,
getting increasingly complex as we go.
You might remember back to your discussion
of confounding in EPI I,
where you talked about how we're able to control
or adjust for confounding in the analysis phase of a study.
In EPI I, we talked about adjusting
and controlling for confounding in terms of stratification.
However, there are more advanced methods
involving linear regression
that we'll talk about starting in the next module.
Make sure that you're feeling really comfortable
and solid with the information in this module
because we're going to keep building on it
for the next few modules.
So if you have questions about what it means
to be a confounder or some of the basics of adjusting,
please reach out to me or Itha
before we move on to regression in the next model.