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st: more on_statsby error
From
"Feiveson, Alan H. (JSC-SK311)" <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: more on_statsby error
Date
Wed, 22 Sep 2010 10:33:11 -0500
Apparently, in an -xtmixed_ command with more than one level, -statsby- can only handle options in the fixed or random sections if such options occur only once in the whole model:
option in the fixed part ony:
. statsby _b[ib],by(condition outcome) : xtmixed y ib, noconst ||isub: ib ||fd: R.ib
(running xtmixed on estimation sample)
command: xtmixed (y ib, noconst) (isub: ib) (fd: R.ib)
_stat_1: _b[ib]
by: condition outcome
Statsby groups
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
[works]
option in the first random level only:
. statsby _b[ib],by(condition outcome) : xtmixed y ib ||isub: ib,noconst ||fd: R.ib
(running xtmixed on estimation sample)
command: xtmixed (y ib) (isub: ib, noconst) (fd: R.ib)
_stat_1: _b[ib]
by: condition outcome
Statsby groups
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
[works]
option in the second random level only:
. statsby _b[ib],by(condition outcome) : xtmixed y ib ||isub: ib ||fd: R.ib, noconst
(running xtmixed on estimation sample)
command: xtmixed (y ib) (isub: ib) (fd: R.ib, noconst)
_stat_1: _b[ib]
by: condition outcome
Statsby groups
----+--- 1 ---+--- 2 ---+--- 3 ---+--- 4 ---+--- 5
.........
[works]
One option in the fixed part and one option in the first random level:
. statsby _b[ib],by(condition outcome) : xtmixed y ib, noconst ||isub: ib,noconst ||fd: R.ib
invalid 'noconst'
r(198);
In general, -statsby- will fail if there is more than one option section anywhere in the model.
Al Feiveson
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