Re: Does anybody now what to do with a warning when performing multiple imputation in SPSS?

Posted by Rich Ulrich on Feb 08, 2019; 6:50am
URL: http://spssx-discussion.165.s1.nabble.com/Does-anybody-now-what-to-do-with-a-warning-when-performing-multiple-imputation-in-SPSS-tp5737384p5737386.html

My first guess is that you are dealing with variables that need

transformations in order to be "equal interval measures" of

whatever you are measuring.  That's the easiest explanation.

Do you have variables with extreme skew or outliers?

If you are only concerned that the imputations are out of range,

well, that's the theoretical shortcoming of discriminant function

compared to logistic regression - Predictions can be out of range.

Pragmatically, here, I would think you might compute them and

recode them to the range.

But I don't know at all what other folks consider acceptable.

--

Rich Ulrich

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From: SPSSX(r) Discussion <[hidden email]> on behalf of shirisha <[hidden email]>
Sent: Thursday, February 7, 2019 9:06 PM
To: [hidden email]
Subject: Does anybody now what to do with a warning when performing multiple imputation in SPSS?

 

Hello,

I'm trying to run multiple imputation on SPSS 25 with defined constraints,
and am getting the following warning that stops the execution of the
process:

"After 100 draws, the imputation algorithm cannot find an imputed value
under the constraints for variable XXX. Check the minimum and maximum values
specified to determine that they are reasonable, and consider raising the
number of draws allowed."

I've checked the min and max values and raised the number of draws, but am
still getting the same error with the same or different variable.

The thing is that if I don't define constraints, let SPSS "figure out" min
and max itself, SPSS imputes out of the range values. Let's say if min and
max for the variable is 1 and 5, imputations can be 0.4 or 6.2.
Thank you!



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