<>
*************
webuse childweight, clear
xtmixed weight /*age */ || id:, /*
*/ var
di (exp([lns1_1_1]_b[_cons]))^2
di (exp([lnsig_e]_b[_cons]))^2
//post them to process further
nlcom (sdcons: (exp([lns1_1_1]_b[_cons]))^2) /*
*/ (sdresidual: (exp([lnsig_e]_b[_cons]))^2), post
mat l e(b)
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Christian Weiß
Gesendet: Donnerstag, 17. September 2009 23:03
An: statalist
Betreff: st: Storing random intercept estimation? (xtmixed?)
Dear Statalist,
using a textbook example on birthweight I estimated the following
model: xtmixed birwt ||: momid:, variance
yielding
----------------------------------------------------------------------------
--
birwt | Coef. Std. Err. z P>|z| [95% Conf.
Interval]
-------------+--------------------------------------------------------------
--
_cons | 3467.969 7.138554 485.81 0.000 3453.977
3481.96
----------------------------------------------------------------------------
--
----------------------------------------------------------------------------
--
Random-effects Parameters | Estimate Std. Err. [95% Conf.
Interval]
-----------------------------+----------------------------------------------
--
momid: Identity |
var(_cons) | 135686 4755.874 126677.6
145335
-----------------------------+----------------------------------------------
--
var(Residual) | 142625.4 2965.965 136929.1
148558.7
----------------------------------------------------------------------------
--
LR test vs. linear regression: chibar2(01) = 1316.12 Prob >= chibar2 =
0.0000
with "di _b[_cons]" I can display (and thus process) the estimated
coefficient of birwt. However, I would like to process the estimated
variance components of the random intercept (i.e. var(_cons) and
var(Residual).
How can adress these values?
Best,
Chris
Viele Grüße
Christian
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