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RE: st: Sample command question


From   Richard Williams <Richard.A.Williams.5@ND.edu>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: Sample command question
Date   Sun, 29 Oct 2006 21:22:19 -0500

At 09:10 PM 10/29/2006, David McClintick wrote:
Actually, I just realized that your suggestion isn't going to work. As I
am generating a sample based on each variable, and I have different
amounts of missing values for each variable, your command would drop all
observations that had any missing value for any one of the variables. I
only want to drop observations for that particular sample when missing
in that particular variable.
All the loops sort of confuse me so you may be right! But I guess I don't see how that happens if the code is something like

local i=1
foreach x in var1-var91 {
while `i' <=10 {
use c:\ado\personal\easy.dta
keep if !missing(`x')
sample 5, count
save mewsample`i', replace
local i= `i' +1
}
}

You open a file, drop cases with MD on 1 variable, sample and save as a new file, and then reopen the original file and repeat the process for a total of 10 times, and then move on to a different x.

In any event, I am guessing that some sort of keep if statement should be in there, even if I don't have the right one.

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Richard Williams, Notre Dame Dept of Sociology
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