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RE: st: Missing outcome variables - how to deal with these?

From   Maarten buis <>
Subject   RE: st: Missing outcome variables - how to deal with these?
Date   Sat, 23 May 2009 08:02:55 +0000 (GMT)

--- On Fri, 22/5/09, Tomas M wrote:
> For my data, I am quite certain that the data is not
> missing at random (NMAR).  I have reason to believe
> that my missing outcome data is related to the outcome data
> itself.  I do have a full set of explanatory variables
> for all of my observations, however.
> Does this mean that I cannot use the typical
> remedies?  What other options are there for analyzing
> missing data that is non-ignorable?

I have always stayed away from those NMAR models. The problem
is that they just can't produce empirical estimates: They 
critically depend on something that can't be seen. I realise
that there are questions out there that are so important that
we must just give the best "guesstimate" we can, even though
under normal circumstance that best guess would not be 
considered good enough. Till now I have been able to avoid
those questions, so I don't know the answer to your question.

-- Maarten

Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen


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