Exporting psacalc's delta with outreg2

[Sarah Ferbe]

Dear Stata Forum Users,

I am running multiple linear regressions some without and some with controls. For the latter I have calculated the delta value using Oster's (2019) psacalc command. I would like to add these estimates to my final regression tables, however, something in my code appears to be not working. If I run a single regression (e.g. Model 2 here) and export my results using outreg2 this works perfectly fine (https://www.statalist.org/forums/for...ound-estimates). However, once I add other models Stata appears to not find the stored delta values anymore (Error message: check eret list for the existence of e(delta1))

reg gr3_math std, robust
est store m1
reg gr3_math std $controls, robust
est store m2
     psacalc delta `std'
     scalar delta1 = r(delta)
     estimates restore m1
     estadd scalar delta1

reg gr3_lang std, robust
est store m3
reg gr3_lang std $controls, robust
est store m4
     psacalc delta `std'
     scalar delta1 = r(delta)
     estimates restore m1
     estadd scalar delta1

outreg2 [m1 m2 m3 m4] ///
          using "$tables/Trial", ///
          excel dec(3) label replace ///
          keep(std) addstat(Oster's (2012) Delta, e(delta1))

I hope my code is comprehensive and look forward to any hints on how to solve this issue! Thank you!

[Andrew Musau]

outreg2 and estadd from estout are from SSC (FAQ Advice #12). Your code does not store the statistic in the model results. You need, e.g.,

estadd scalar delta1: m1

for model 1,

estadd scalar delta1: m2

for model 2, and so on.