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| From | "JVerkuilen (Gmail)" <jvverkuilen@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: impute items and total sum scores of a scale |
| Date | Thu, 6 Dec 2012 08:22:02 -0500 |
On Thu, Dec 6, 2012 at 7:25 AM, Paula Arce <paulaarce@rocketmail.com> wrote: > > I am using mi ice to impute missing data into my data set. I need to impute both single items and total scores of my scales. What you're doing makes sense, but you might want to use the new MI suite, which in Stata 12 has the full conditional specification that you get from ice. If I had to guess you have a collinearity problem and one of the imputations is not converging. Try stripping the model down and see if you can just impute the items first, or even a subset of them, or use linear regression and see if you get a reasonable answer, then build up to the model you want. MI is never smooth. * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/