# difference in difference

1. ### Entropy Balancing in Panel Data Setting

Hi everyone, I want to examine the effect of a treatment on an observation group with a Diff-in-Diff approach in a panel data setting in Stata. To avoid differences across subsamples I additionally using entropy balancing. Now, I have a methodical question. I have already read some papers on...
2. ### Propensity Score Matching and difference-in-difference

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...
3. ### Difference in Difference Method

Hi guys! For some research we ran a regression analysis in Stata using the Difference in Difference method. this method uses a controlling group of countries to neutralise other effects than the effect of change in regulations. Afterwards we manipulated the data deviding it through year 2011...
4. ### Difference-in-differences in Health Economics Research

Hi, I'm doing a difference-in-differences analysis of a health policy intervention. Health clinics are paid for the percentage of eligible patients who they give the right treatment to. The clinics are measured/paid separately for each type of treatment indicator. One year, some of the...
5. ### significance of difference across genders between changes in two conditions

I would like to find out whether measured biological changes in a disease condition compared to a healthy control condition differ significantly between the two genders. So instead of classical approaches for testing the significance of the difference between two conditions, I would need to...
6. ### Unusual distribution of the continuous outcome

Hello dear forum members! I am seeking your guidance with the following issue. So, I am estimating a "classic" difference-in-difference model (using pooled OLS estimator): Y = time + treated + time*treated, where Y is the average Medicare payment (amp) in \$. Here is the descriptive...
7. ### Diff in Diff -> what is the minimum amount of treated observations?

Can I use Diff in Diff when I only have a single treated observation? The case is that I observe the changes of a tax reform on real estate sales on the real estate prices (measured by an index). If I used the Index as my dependent variable I do not fulfill the 3rd assumption of the OLS, as...
8. ### Difference-in-difference regression

Hello, I have a problem with my current research project and I am not very experienced with statistics so it would be great to find some help here! I have performance data of companies which can be categorized into two different groups (state-owned, not state-owned). Now I would like to...