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survey_time
2009 Oct 13
2
Greater than less than in "ifelse"
I'm trying to categorize a continuous variable (yes, I know that's horrible, but I'm trying to reproduce some exercises from a textbook) and don't really know an efficient way to do this.
I have a data frame that looks like:
surv_time relapse sex log_WBC rx
1 35 0 1 1.45 0
2 34 0 1 1.47 0
3 32 0 1 2.20 0
4 32 0 1 2.53 0
And I'm trying to categorize log_WBC into:
(0-2.30) = "low"
(2.31-3.00)= "medium"
(>3.00) = "high&...