multiple margins post or estpost margins

[Caspar Aumueller]

Hello Statalisters,

i'm investigating the effect of wealth on charitable donations. For this i'am running a heckman-regression on donations, a dummy for donations yes/no, wealth and a number of control- and selection-variables.

Now, i'd like to report margins or some other effects and i'd prefer to retrieve the margins via esttab/estout, first because it's simple, secondly because it looks good.

As far as my understanding goes, esttab retrieves the parameters values, summary-statistics, etc, stata stores in eststo. Margins usually does not store it's results there (or anywhere permanently, as far as i know), except if one uses the post-option or the estpost margins command.

The problem is that by specifying these options i seem to override all the input from my heckman-estimation, so that i can not use margins, post consecutively but rather only ones after the heckman-estimation. At least, regardless of the command i use (estpost margins or margins, post) when i want to use it a second time without reestimating the heckman, i get the following error-message:

margins cannot work with its own posted results
r(322);

Now my question: is there any way of using multiple, consecutive margin-commands, store the results and retrieve them via esttab (or something which is as convenient)?

This is my code:

* prepare locals
#delimit ;
local wealth = c.wealth_norm##(c.wealth_norm#c.wealth_norm);
local control = ib5.wealth_perc ib0.soc_eng_2011 ib0.child_dum ib4.age_gr ib4.gross_gr
                 ib1.sex ib3.casmin_comp ib1.migback ib3.hlf0261 ib0.unempl ib1.loc1989;
local income = c.netinc_norm##(c.netinc_norm#c.netinc_norm);
local inherit = c.inherit_norm##(c.inherit_norm#c.inherit_norm);
local selection = ib0.married ib0.retired ib0.inherit_dum;

#delimit cr

        svy:heckman lgivings ib0.hvid `wealth' `income' `inherit' ///
                     `control' `weight', ///
                 select(givings_dum = ib0.hvid `wealth' `income' `inherit' ///
                        `control' `selection')
        eststo heckman

        * effect of employing people on donations *
        estpost margins hlf0261, pred(ycon)
        eststo marginhlfdon
        
*** The last command is not working, stata returns error-message as described ***

        * effect of employing people on probability to donate donations *
        estpost margins hlf0261, pred(psel)
        eststo marginhlfprob

My results.

To get the results, i used estimates replay, where no information on svy is given:

Number of Strata: 1
Number of PSUs: 2121

Many thanks in advance,

Caspar

[daniel klein]

Lots of user-written commands here, for which you should explain where they come from. The general outline is

// run heckman model
heckman [...]

// save results
estimates store heckman_results

// run margins and save results 
margins [...] , post
estimates store margins_1

// bring back heckman results
estimates restore heckman_results

// run next margins
margins [...] , post
[...]

Best
Daniel

[Caspar Aumueller]

All right, that was easy. I'm sorry, obviously i didn't do my research profound enough.

I suppose with "lots of" you refer to esttab/estout/eststore/estpost? They are all from the same package estout, which is available via ssc install estout.

Examples can be found here (also accessible via h estout, upper right corner): http://repec.org/bocode/e/estout/index.html

Thank you very much!