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Ang. st: AW: var-covar matrix from logistic regression
From
Tomas Lind <[email protected]>
To
[email protected]
Subject
Ang. st: AW: var-covar matrix from logistic regression
Date
Wed, 25 Feb 2009 17:13:03 +0100
Thanks for your answer.
I was thinking about using variance-covariance coefficients in calculations
or just display them like I can display:
di exp(_b[smoke])
/Tomas
st: AW: var-covar matrix from logistic regression
Martin Weiss
till:
statalist
2009-02-25 17:04
Sänt av:
[email protected]
Svara till statalist
<>
Re coefficients: what do you mean by "use betas in some calculations?"
After estimation, you can access them as seen in the third line here. If
you
want to store them, i.e. turn the ephemeral "e(b)" into something longer
lasting, see the fourth line.
*************
webuse lbw2, clear
logit low age lwt race2 race3 smoke ptl ht ui
di _b[age]
matrix define A=e(b)
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Tomas Lind
Gesendet: Mittwoch, 25. Februar 2009 16:40
An: [email protected]
Betreff: st: var-covar matrix from logistic regression
Dear Stata,
I have done logistic regression with logit.
How can I look at the variance-covariance matrix? I understand it is saved
in something called e(b), but I can´t see it!
Can I use one of the coefficients like it is possible to use betas in some
calculations? How to do it!
/Tomas
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