Bysort command for a PPML regression

[George Baker]

Hello everyone,

For my research I have to perform +- 250 seperate ppml regressions as I require results depending on various countries. I know for a normal regression, the command

bysort Country

tells stata to perform seperate regressions depending on each country. Sadly, this command does not work in PPML.

Is there a command that can do something similiar? Or should I perform all the regressions seperately by hand?

Kind regards,
George

[Dirk Enzmann]

See the the Stata help for levelsof (and the examples shown).