Hi
 
A very simple question (from a R novice)
 
How do I create a new variable within R.  I have two existing variables (eg
group number 1,2,3 and diagnosis 1,2,3).  How would I create a new variable
in which those in group1 with diagnosis 1 are assigned 'positive' and the
remainder are 'negative'??
 
Many thanks- and sorry it's so simple!
 
Philip 

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