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Re: AW: Re: st: remaining missings after multiple imputation


From   Anne Jurczok <jurczok@uni-potsdam.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: Re: st: remaining missings after multiple imputation
Date   Tue, 20 Apr 2010 15:36:44 +0200

I checked the mv codebook and it seems that the missings in the imputation variables of my main variable (lnvermgen), does correspond with with the one other variable (erbsumm). Both variables are continous, if the erbsumm variable has a missing in the imputation, than the lnvermgen has a missing as well. However this applies only to 8 missings, because erbsumm had only 8 missings to begin with.

Quoting Martin Weiss <martin.weiss1@gmx.de>:


<>

" I looked at my variables which have missings despite the imputation
and found no coherent pattern."


Have you used -codebook- with the -mv- option yet? It sometimes helps with
the detection of patterns in missing values...



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Anne Jurczok
Gesendet: Dienstag, 20. April 2010 15:14
An: statalist@hsphsun2.harvard.edu
Betreff: AW: Re: st: remaining missings after multiple imputation

Hello,
  First of all thank you for the advice with the if function in ice. I
will certainly try it as well.

Do these observations contain only missing values on
the variables you use for the imputation?...

...I looked at my variables which have missings despite the imputation
and found no coherent pattern. Do you have any idea?
Best, Anne

--- On Mon, 19/4/10, Anne Jurczok wrote:
I decided against using ice, since I have different types
of missings in my dataset (hard and soft missings) and I
couldn't find any literature about different types of
missings handled by ice.
It is implicit in the sense that -ice- allows you to specify
an -if- statement. So, you could type something like:

gen byte soft = lnvermgen < .a
ice <varlist> if soft, <other options>
Not all cases of my dataset are considered for the
imputation.
Do these observations contain only missing values on
the variables you use for the imputation?


-- Maarten

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

http://www.maartenbuis.nl
--------------------------




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--
Anne Jurczok
Universitaet Potsdam
Humanwissenschaftliche Fakultaet
Department for Education
Sozialwissenschaftliche Bildungsforschung
Karl-Liebknecht-Str. 24-25
14476 Potsdam

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