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sbin
2011 Apr 19
2
Several factors same levels
This is probably very simple but I'm new to R so apologies for being stupid.
I have some data with No coded as 0 and yes coded as 1.
e.g.
id sex alcohol smoker
1 M 0 1
2 F 1 0
3 M 0 0
I realise I can covert the numerical variable back to a factor by
falcohol<-factor(alcohol,levels=0:1)
levels<-c("No","Yes")