```
library(memisc)
labels(anemia$anem)<-c("not anemic"=0, "anemic"=1) #library memisc```
Introduction to the Analysis of Survival Data in the Presence of Competing Risks
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4741409/
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Unlike Stata and other statistical package, running a cross tabulation on a subset of data in R is not a very straight forward thing. Let ...
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using tapply to run a command, in this case calculating the variance of the variable met within each of the categories of the variable coffe...
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``` hist(coffee.exercise$met[coffee.exercise$coffee.consumption=="A"]) hist(coffee.exercise$met[coffee.exercise$coffee.consumpt...