Running a stratified regression

Hello,
How do I run a stratified regression by separating the same data into two categories? for instance high income and low income countries using a specific threshold..

Please show sample data.
If your data is not available to the public, please add some text based on the data that comes with R to explain it.

This topic was automatically closed 21 days after the last reply. New replies are no longer allowed.

If you have a query related to it or one of the replies, start a new topic and refer back with a link.