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RE: st: RE: Random assignment


From   "FEIVESON, ALAN H. (AL) (JSC-SK) (NASA)" <alan.h.feiveson@nasa.gov>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: RE: Random assignment
Date   Mon, 29 Dec 2003 08:07:43 -0600

Oops! Thank you -
A.F.

-----Original Message-----
From: dario.consonni@unimi.it [mailto:dario.consonni@unimi.it]
Sent: Friday, December 26, 2003 5:02 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: Random assignment


I think you meant:

replace y=uniform()<=`p' if y==.

Dario Consonni

----- Original Message -----
From: "FEIVESON, ALAN H. (AL) (JSC-SK) (NASA)" <alan.h.feiveson@nasa.gov>
Date: Wednesday, December 24, 2003 10:18 pm
Subject: st: RE: Random assignment

> Here's one way - suppose your dichotomous variable is y:
> 
> summ y
> local p=r(mean)  
> replace y=uniform<=`p' if y==.
> 
> Al Feiveson
> 
> 
> 
> -----Original Message-----
> From: celdjt@umich.edu [mailto:celdjt@umich.edu]
> Sent: Wednesday, December 24, 2003 12:40 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Random assignment
> 
> 
> I have a data set with 50 missing values for a dichotomous 
> variable, coded 
> 1 and 0; I would like to recode the 50 missing values to non-
> missing, 
> inserting 1 and 0's on a random basis proportionate to their 
> presence in 
> the overall data set. Any porcedure for this sort of thing in 
> stata. 
> Thanks.
> 
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