We start conducting analysis exploring the results in a DID analysis. With the indicators created in the previous tasks as outcomes, we want to look at the trends before and after COVID. For now focus on one outcome, then we will expand the number of variables for each country. We can start using market concentration or prices as first outcomes, for example.
Treatment would be health products and control non-health products. Then when we explore other outcomes, we will produce the results having as treatment covid products and control non covid within the health sector.
Before doing the regression, check the trends of treatment and control group, then calculate the estimates for each outcome and afterwards plot these type of graphs Type 1 / Type 2 with the results that indicates the time of COVID (March 2020) with a line from the x axis; and also the regression tables for each of them.
Diff-in-Diff analysis