Hi, all and welcome to module seven.
You've made it about halfway through
the content of Epi2.
In the last module, we reintroduced confounding.
And a lot of what you saw in that module
should hopefully have felt familiar from Epi1.
In this module, we're going to build on that discussion
and start talking about the ways
that we control for confounding.
We started this in Epi1
when we talked about stratification,
and if you remember,
we calculated stratum-specific measures of risk,
and then compared those to understand
if confounding was occurring.
In this module, we extend that
to talk about controlling for confounding
using multiple linear regression.
This is an advanced statistical technique
that allows you to control
for multiple confounders simultaneously.
To get to multiple linear regression,
we first need to learn about
simple linear regression and correlation,
which is where this module starts.
There is a lot of information in this module,
a lot to read, a lot to watch, and a lot to absorb,
so please give yourself plenty of time for this module.
It's not one that you wanna wait
for the last minute to get started on.
You'll also be learning how to apply these techniques,
possibly for the first time, in SPSS.
So again, give yourself some time to learn
and please reach out with questions.
Work with each other on Yellowdig, @ tag me or your TA,
or send us an email if you get stuck.
Take care and I'll see you in the next module.