Hi All, I have a dataset for event study and I am trying to normalize the median by setting t-1=1 so I can make figures with the 25th percentile, 50th percentile and 75th percentile but I am not sure how to code this in stata. Here is an example data below which shows how my data looks with two of my variables income and GDP. I have already found the percentiles of my variables but not sure how to do it with t-1=1 and how to interpret that. Thanks!
time income_50 income_75 income_25 gdp_50 gdp_75 gdp_25
-2 98 103 72 98 104 79
-1 95 100 75 98 105 79
0 94 99 73 100 105 80
1 97 101 76 101 106 82
2 98 102 79 102 107 84