Multiple imputation

Posted by Sung on Apr 05, 2010; 6:09pm
URL: http://spssx-discussion.165.s1.nabble.com/Multiple-imputation-tp1075737.html

Hi, all.

I have some questions about multiple imputation (I run MI using SPSS 17).

1. Should I have to report results based on the original dataset or imputed datasets?

2.  If there was a difference between original and imputed datasets, what do I have to use? I mean there ara rules or criteria for decision?

3. In spss 17, after MI, I run hierarchical regression as below.
----------------------------------------------------
SORT CASES  BY Imputation_.
SPLIT FILE LAYERED BY Imputation_.

REGRESSION
  /DESCRIPTIVES MEAN STDDEV CORR SIG N
  /MISSING LISTWISE
  /STATISTICS COEFF OUTS R ANOVA CHANGE
  /CRITERIA=PIN(.05) POUT(.10)
  /NOORIGIN
  /DEPENDENT T_PTSD
  /METHOD=ENTER FEScoh FESconf entage D_enrank
  /METHOD=ENTER CE TO_mimpo Cohesion Desire Undesire
  /METHOD=ENTER ELDER SLE SS
  /RESIDUALS HIST(ZRESID) .
-----------------------------------------------------
   The problems of this result were I couldn't find R, R square, adjusted R square, and F value of pooled imputation. I mean I could find these results for each imputed data, but pooled imputation data. How can I report R, R square, adjusted R square, and F value? In addition, I couldn't find beta (standardized coefficients) of pooled imputation (there were only unstandardized coefficients: B and Std. Error).

Please give me some direction. Thank you so much in advance.

Sincerely,

Sungrok