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Re: st: creating variable with randomly missing values


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: creating variable with randomly missing values
Date   Fri, 7 Dec 2007 00:03:25 +0000 (GMT)

--- Ahmed Arif <arifaa@gmail.com> wrote:
> I have a dataset with variables x and y. the dataset has 5000
> observation. i want to generate another variable xmiss, such that 50%
> of x values are dropped (recoded as missing value) randomly from the
> dataset w/o affecting values of y. is there an easy way to do this?

M.L. Buis (2007), "Stata tip 48: Discrete uses for uniform()", The
Stata Journal, 7(3), pp. 434-435. 

You can find a pre-publication draft on my website.

-- Maarten



-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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