Code:
xtset id week
eststo: xtreg _contritotal afterblock age age2 if inrange(week, -4, 4) & week != 0, vce(robust) fe
eststo: xtreg _contriaddition afterblock age age2 if inrange(week, -4, 4) & week != 0, vce(robust) fe
eststo: xtreg _contrideletion afterblock age age2 if inrange(week, -4, 4) & week != 0, vce(robust) fe
I think I can change it to:
Code:
xtset id week
foreach v of varlist addition deletion total{
       eststo: xtreg _contri`v' afterblock age age2 if inrange(week, -4, 4) & week != 0, vce(robust) fe
      }
Why my foreach loop failed?