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st: clustering option after ivprobit


From   Choudry T Shehzad <C.T.Shehzad@rug.nl>
To   statalist@hsphsun2.harvard.edu
Subject   st: clustering option after ivprobit
Date   Tue, 02 Sep 2008 14:12:41 +0200

Dear statalisters:

In stata help pages vce(cluster, clustervariable) and vce (bootstrap)
has been mentioned as options but when I try to run it says

 ivprobit dependent x y l.z  (zz = mz pz), vce(cluster, country),
twostep, first
invalid 'twostep'
r(198);

. ivprobit dependent x y l.z  (zz = mz pz), vce(cluster, country), first
invalid 'first'
r(198);

. ivprobit dependent x y l.z  (zz = mz pz), vce(cluster, country)
option country not allowed
r(198);

. ivprobit dependent x y l.z  (zz = mz pz), vce(boot)
time-series operators are not allowed with bootstrap without panels, see
tsset
r(198);

Only option it accepts is vce(robust). While I want to bootstrap
standard errors on clusters. I understand that ivprobit is not for panel
then why this option has been given after ivprobit. can anybody help?

best regards,

Shehzad
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