Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: drop command & missing values


From   "Francesco Trivieri" <francesco.trivieri@unical.it>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: drop command & missing values
Date   Mon, 12 Oct 2009 12:36:15 +0200

Dear Maarten and Martin,

thank you very much for your answers. I am always including the x variable in my estimation, I don't understand why:

drop if x>123
xtabond2    Y   Y_1    X    Z ....
the estimation sample is 8100

drop if x>123 & x!=.
xtabond2    Y   Y_1    X    Z ....
the estimation sample is 12200

thanks again
Francesco
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index