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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 againFrancesco
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