Hi everyone and welcome to module six.
In this module, we'll continue our discussion
of threats to internal validity.
We're going to start talking about confounding.
This is the first
of three modules in which we'll discuss confounding.
You might remember back
to our discussion of confounding and epidemiology one
where we talked about how we're able to control
or adjust for confounding in the analysis phase of a study.
In EPI one, 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 in the next few modules.
Make sure 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.
Have a good week and take care.