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st: Problem with stata concindexg command

From   Shanaz <>
To   "" <>
Subject   st: Problem with stata concindexg command
Date   Thu, 31 Oct 2013 16:21:38 +0530


I have a small question and hope you can assist me.

I have installed concindexg, to calculate concentration index for group data but i keep getting the following error. Would you be able to help me.

I have stata 12.

.         concindexg patcatratio if pattype==1 , welfarevar(popq) 
unrecognized command:  nmissing

end of do-file


patcatratio is a continuous variable
popq is the quintile variable, the categorical variable

have i entered the syntax wrong?

Shanaz Saleem

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