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st: twoway graph for imututed values against observed


From   Andrew Stoddart <andrew.stoddart@ed.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   st: twoway graph for imututed values against observed
Date   Wed, 25 Jan 2012 14:34:33 +0000

Dear Statalisters

Im performing multiple imputation for the first time using the mi ice command in stata 12.

Does anyone know of a way to graph the imputed values over the observed values on the same graph?

For example I am at present using

mi set wide
mi ice ? , add(5) [options]

twoway (hist x1, [options]) (hist _1_x1 if missing(x1), [options]), legend(label(1 "observed") label(2 "imputed"))


I then view each of the 5 imputations by swapping _1_x1 for _2_x1, _3_x1, _4_x1 and _5_x1 in turn to quickly check the imputed values appear reasonable

Obviously it would be preferable to be able to plot all imputed values against all observed directly rather than checking individual imputations one at a time.

Can anyone help?

Thanks in advance


Andy Stoddart
Health Economist
Edinburgh Health Services Research Unit (HSRU)
www.hsru.ed.ac.uk

Edinburgh Clinical Trials Unit (ECTU)
Room D34, Level 2
Outpatients Building
Western General Hospital
Edinburgh, EH4 2XU

Tel:  +44 (0)131 537 3867 (except Tuesdays)
      +44 (0)131 650 3230 (Tuesdays only)

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Scotland, with registration number SC005336.


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