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RE: st: FW: Marginal effects for the two-part model
From
"Michael Palmer" <[email protected]>
To
<[email protected]>
Subject
RE: st: FW: Marginal effects for the two-part model
Date
Fri, 4 Feb 2011 12:51:43 +1100
Understood, thanks Maarten!!
Michael Palmer
PhD Candidate
National Centre for Epidemiology and Population Health
The Australian National University
Ph. 6125 0538
M. 0437 867 940
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Maarten buis
Sent: Thursday, 3 February 2011 7:54 PM
To: [email protected]
Subject: RE: st: FW: Marginal effects for the two-part model
--- On Thu, 3/2/11, Michael Palmer wrote:
> There seems to be some confusion on the computation of marginal
> effects for the TPM I described as some authors still suggest combined
> marginal effects.
That depends on what the outcome of interest is. If you want the
unconditional outcome, for example people get 0 cost when they don't
seek medical help and some positive cost when they do, then you need to
include both parts of your model. However, as I understood your original
question, you wanted the cost conditional on seeking medical help.
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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