Re: st: xtmixed and missing data

["Mary E. Mackesy-Amiti" <mmamiti@uic.edu>]

if you get no answer that may indicate that your question is not 
understandable.  Try supplying more information, like the syntax you are 
using to estimate your model.


On 4/28/2011 2:19 PM, Dennis Kramer wrote:
> I am estimating an xtmixed function while controlling previous year
> experience/achievement. How I am using three previous year testing
> data to predict the current year's performance. However, I do not want
> to exclude individuals in my sample who do not have a score in each of
> three years. Currently, when I am estimating the predicted value, it
> is dropping all those who do not have a value in each variable.
>
> Is there is a command I could use to allow data to be estimated on the
> number of data points an individual has? Overview of my data is as
> follows:
>
> Subject # --- Year X Test --- Year X-1 Test ---- Year X-2 Test ---
> Year X-3 Test ---- Covariates
>
>
> Thank you
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

--
Mary Ellen Mackesy-Amiti, Ph.D.
Research Assistant Professor
Community Outreach Intervention Projects (COIP)
School of Public Health m/c 923
Division of Epidemiology and Biostatistics
University of Illinois at Chicago
ph. 312-355-4892
fax: 312-996-1450

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/