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Re: repost: -cond()- function


From   Richard Williams <[email protected]>
To   [email protected]
Subject   Re: repost: -cond()- function
Date   Thu, 01 Jan 2004 10:24:14 -0500

At 08:59 AM 1/1/2004 -0500, VISINTAINER PAUL wrote:
I have an integer variable that I would like to collapse into a dichotomous variable. Using the following statement:

.gen cholcat = cond(chol,0,1,9)

produces the same output as:

.gen cholcat = cond(chol,0,1)

The first statement continues to recode "missings" as 1, not 9. In order to capture the missings appropriately, I have to follow each -cond()- statement with a -replace- command.

Am I using the -cond()- function appropriately?
Well, if it is any consolation, it looks to me like you are doing it exactly right. In fact, I just tried it with some data I made up using your exact syntax, and gen cholcat = cond(chol,0,1,9) worked fine.

I am using Stata 8; what version do you have? If not 8, maybe the syntax has changed across time?

Incidentally, this command produces a var coded 0, 1, and missing, if that helps any:

gen cholcat = cond(chol,0,1) if chol <.


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Richard Williams, Associate Professor
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