I'm forcing myself to use the -margins- command and I am starting to
like and understand it better. Some things I'd like to see (or else
maybe somebody can tell me how to do them already):
* I'd like a -discrete- option that would tell margins to treat a 0/1
dichotomy as a dichotomy. This would make margins more useful with
older user-written commands (like mine) that do not currently support
the use of factor variables.
* Perhaps the syntax would be tricky, but I am a little surprised
there isn't a generate option. The old adjust command has one. You
might want to see, say, what the predicted probability for a case is
given the values you have fixed using the -at- option.
* As far as I can tell, marginal effects after multiple-outcome
commands are still clunky to generate. You have to give a separate
margins command for each outcome. I wish margins acted like the
user-written mfx2 and margeff commands, generating all the marginal
effects for every outcome with a single command.
* Like I've said before, I wish the old adjust and mfx commands had
been updated for Stata 11. One thing they would need added is an
-asobserved- option, which is the default for margins. At 50 pages,
the manual entry for margins is a little daunting. I think it would
be easier to understand if there were simpler commands that focused
on specific tasks.