# Cholesterol.csv # # Originally from here http://www.stat.wisc.edu/~ane/st371/hw/practice2.pdf # # before: LDL (g/l) level before being administered the treatment. # after: LDL (g/l) level before being administered the treatment. # tx: drug treatment (Lipanthyl or Befizal) # # likely want to compute the difference in LDL # # df$decrease <- df$before-df$after #