Propensity Score Matching and difference-in-difference

SanaH

New Member
#1
Hello,
I am currently writing my thesis and am a little confused about the approach.
I am supposed to do a difference in difference estimation combined with propensity score matching.
I think I do understand both methods in a medical Kontext with a treatment and control group. However, mine is a little different.
I am researching the effect of the shutdown of a major online piracy site on sales and piracy. I don't see how I can make a treatment and control group, since the shutdown makes the site unavailable for everyone. I believe it's a very simple thing I am missing out. I hope you can help me.

Thank you in advance!
 

SanaH

New Member
#3
Thank you for the reply!
My thesis supervisor told me to do it. I'm going to ask him but wanted to make sure first my question isn't completely stupid.