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st: RE: nlcom and delta method
From
"Dr. Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: RE: nlcom and delta method
Date
Tue, 3 Aug 2010 18:50:17 +0200
<>
You have to -post- the result:
***********
sysuse auto, clear
reg price weight length trunk
nlcom (a: _b[weight]/_b[trunk]), post
di _b[a]
***********
HTH
Martin
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Beatrice Crozza
Sent: Dienstag, 3. August 2010 18:35
To: statalist
Subject: st: nlcom and delta method
Dear All,
I did a maximum likelihood, using delta method, to get the values.
So, for example, one result of my maximum likelihood using delta
method is this one:
. nlcom (a: 1/(1+exp(-[ar]_b[_cons])))
a: 1/(1+exp(-[ar]_b[_cons]))
----------------------------------------------------------------------------
--
| Coef. Std. Err. z P>|z| [95% Conf.
Interval]
-------------+--------------------------------------------------------------
--
a | .3697282 .0196595 18.81 0.000 .3311963
.4082601
----------------------------------------------------------------------------
--
Now I wan to test a no linear combinations, using the coefficient of a
, however the usual command for the coefficient: _b[a] doesn't work.
What can I do in this case?
Thanks.
Best,
Bea
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