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From | "Jing Zhou" <jing.zhou@rmit.edu.au> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: dummy variable |
Date | Fri, 16 Sep 2011 18:51:10 +1000 |
Thanks Maarten, it measues whether the second largest shareholder of a listed company is a state shareholder. Jing >>> Maarten Buis <maartenlbuis@gmail.com> 16/09/11 6:02 下午 >>> On Fri, Sep 16, 2011 at 2:09 AM, Jing Zhou wrote: > I have a sample period from 2000-2009. now I am considering to add a dummy variable into the regression. for the year of 2009, only 24 out of 550 observations (<5%) valued at 1 of this dummy. for 2008, 31 out of 502 observations (<5%) valued at 1. further, for the year of 2000-2002, the missing value rate is 61.19%, 31.91%, and 13.33%, respectively. for other variables of the regression, i can get relatively complete data value of each observation. therefore, is it still necessary to include this dummy in my regression? thanks! What is this dummy variable supposed to measure? -- Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/ * * 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/