ivmediate with cluster

[Shah Lya]

Hello, everyone.
I faced the problem of running ivmediate with the cluster.

In ivreg2, I use the command :
ivreg2 Y (X=Z), first cluster(id_district)

where Y=outcome variable, X=variable of interest, Z=instrument variable.

Then I need to use a mediator variable to explain the transmission from X to Y, but I still need to add cluster(id_district) in the analysis.
While I'm running the command:

ivmediate Y, med(mediator_variable) treat(X) inst(Z) full, cluster(id_district)

But, it’s not working. Stata told it was an invalid 'cluster'.
Fyi, I'm using stata 17 for windows with official license.

Help me, please. I'm a newbie using this ivmediate command.

Thanks a lot.

Best regards,
Shah Lya

[Carlo Lazzaro]

Shah:
welcome to this forum.
As per FAQ, you're kindly requested to define community-contribute module like -ivmediate- as such. Thanks.
That said, what if you code:

ivmediate Y, med(mediator_variable) treat(X) inst(Z) full, vce(cluster id_district)

[Shah Lya]

Thanks, Carlo for your answer.

But, it still told invalid 'vce'.

Or probably is there another command that I have to install before running that ivmediate command? Please help.

Best regards,
Shah Lya

[Carlo Lazzaro]

Shah:
I've just sniffed out the culprit: it's a trivial matter of comma:

 
 ivmediate Y, med(mediator_variable) treat(X) inst(Z) full vce(cluster id_district)

[Shah Lya]

Thank you very much, Carlo.

It's now solved.

Best regards,
Shah Lya