Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: iccvar
From
Dirk Enzmann <[email protected]>
To
[email protected]
Subject
Re: st: iccvar
Date
Thu, 13 Dec 2012 11:47:13 +0100
It seems that -quickicc- (from SSC) does *not* calculate the ICC of
random slope models. But you can use -xtmrho- (from SSC), instead -
although -xtmrho- does not calculate the standard error.
Stata example (runable from do-file window):
* --------------------------------------------
cap which quickicc
if _rc ssc install quickicc
cap which xtmrho
if _rc ssc install xtmrho
webuse nlswork
xtmixed ln_wage grade age c.age#c.age ttl_exp ///
tenure c.tenure#c.tenure || idcode: tenure
xtmrho
quickicc
* --------------------------------------------
BTW: Note that in the first "official" example for -xtmixed- (see -h
xtmixed-) the variables ln_wage and idcode are abbreviated to ln_w and
id which - depending on your varabbrev setting (see -h set_varabbrev-)
might give you an error message if you try to run it (this should be
corrected!).
Dirk
On Wed, 12 Dec 2012 09:03:45 -0700, "Robert
Fornango"<[email protected]> wrote:
---- <snip> --------------------
As a final note on -iccvar-: please be aware that the command only estimates
the ICC for random intercept models, up to 4 levels. If you have a random
intercept and random slope model, you should use -quickicc-, also by Eric C
Hedberg.
---- <snip> --------------------
========================================
Dr. Dirk Enzmann
Institute of Criminal Sciences
Dept. of Criminology
Rothenbaumchaussee 33
D-20148 Hamburg
Germany
phone: +49-(0)40-42838.7498 (office)
+49-(0)40-42838.4591 (Mrs Billon)
fax: +49-(0)40-42838.2344
email: [email protected]
http://www2.jura.uni-hamburg.de/instkrim/kriminologie/Mitarbeiter/Enzmann/Enzmann.html
========================================
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/