Quite often, I am more interested in knowing how a treatment might improve the outcomes of the untreated, rather than which effect the treatment had on the treated. However, I can only find the two procedures (estat teffects, atet) and (estat teffects, ate). My intuition would be to try (estat teffects, ate subpop(if treatmentvariable==0)), but when I tested this approach for calculating the ATET, it gave me the wrong number. The correct ATET required to write (estat teffects, atet subpop(if treatmentvariable==1)). So now I wonder whether I get the ATU by writing (estat teffects, atet subpop(if treatmentvariable==0)), or whether there is a completely different alternative way. Thank you for any advice.