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st: RE: re: proper use of if

From   Nick Cox <[email protected]>
To   "'[email protected]'" <[email protected]>
Subject   st: RE: re: proper use of if
Date   Wed, 17 Nov 2010 16:18:29 +0000

Good point. The choice comes down to what the user prefers, but predictions you don't want can always be ignored or overwritten in any case. 

[email protected] 

Christopher Baum

Nick said

I agree that -if e(sample)- is a good piece of syntax to know, but otherwise I don't see a practical difference here. 

If the observations couldn't be included, the result will be missing and the consequence is the same.

Well, not quite so. If the dependent variable was missing but the RHS variables were not, -predict- could create a prediction for those observations.  Repeating the if condition would not catch that, but e(sample) would.

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