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st: Choosing the Minimum Value and Recording Variable Name


From   Erika Kociolek <[email protected]>
To   [email protected]
Subject   st: Choosing the Minimum Value and Recording Variable Name
Date   Wed, 3 Apr 2013 06:45:23 -0700

I am working with a dataset that looks like this:

id  drug1  drug2  drug3  drug4  drug5  drug6
1   10     20     30      .      .      .
2   40     30      .     50      .      .

I'd like write code that finds the minimum value of drug* and for each
observation, puts the name of the variable with this minimum value in
a new variable (let's call it minimum_var), i.e.:

id  drug1  drug2  drug3  drug4  drug5  drug6 minimum_var
1   10     20     30      .      .      .    drug1
2   40     30      .     50      .      .    drug2

I would prefer to do this without reshaping the data, and know that I
will need to account for ties.

Thank you in advance for your assistance!

Erika
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