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Re: st:multiple imputation for missing items of a scale


From   Mandy fu <mandy.fu1@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st:multiple imputation for missing items of a scale
Date   Wed, 2 Dec 2009 23:08:08 -0500

Hi all,

Sorry for bothering you. I have found similar question has been
discussed previously.
I should have done more research in checking the archive  in advance.

Best wishes,
Mandy

On 12/2/09, Mandy fu <mandy.fu1@gmail.com> wrote:
> Hi all,
>
> I would like to impute for the missing items for a scale measuring
> stress. The stress scale is calculated by adding 18 items all
> together, where each item is about one respect about stress. An
> example of one of the items is like this:
>
> item1 : question: How often did you feel no interest in things in last 30 days?
> 0:   never
> 1:   occasionally
> 2:   often
> 3:   very often
>
> In the data set, many respondents have a couple of missing items out
> of the 18 items. So, I am thinking to use multiple imputation to
> impute the missing items in order to get the scale measurement.
>
> My question is, using multiple imputation (command -ice- ) to impute
> the missing items, is there anything different than , say, any other
> 18 usual variables? Or is there anything I need to be especially
> cautious when imputing these items?  Thanks in advance!
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