Dear StataListers,

Is it possible to recode the _at variable in a stored estimate (see below)? I would like to add 23 units to that variable within the estimate such that they read from 24 to 40.

This (_at) is a time-centered variable for months in the second period in an interrupted time series that I am trying to overlay using coefplot. The pre-period trendline is plotted from 0 to 40 months, and I want the post-period estimates, which are run using a different variable time-centered such that month 24 is equal to 0, to shift on the plot to start at month 24. I don't want to change it in my regression.

Code:
.

margins , at (policyXmontime2=(0(1)16)) post

estimates store aim1_post

estimates table  aim1_post

---------------------------
    Variable | aim1_post   
-------------+-------------
         _at |
          1  |  .19411549  
          2  |  .19503899  
          3  |  .19596542  
          4  |  .19689476  
          5  |  .19782702  
          6  |   .1987622  
          7  |  .19970029  
          8  |   .2006413  
          9  |  .20158522  
         10  |  .20253205  
         11  |  .20348179  
         12  |  .20443443  
         13  |  .20538997  
         14  |  .20634842  
         15  |  .20730976  
         16  |    .208274  
         17  |  .20924113  
---------------------------
Thanks!!