search for: faildate

...;m trying to define new quite simple variable but I'm struggling with R syntax (when coming to dates) for a while and still getting <errors> on it. I would be very grateful if someone could help me with this, to be able to move on. I have the following variables: - Transplant.date - Faildate - Death.date The new variable Time should do the following thing: Time <- If Not IsNull(<Faildate>) Then DaysBetween(<transplant date> ,<Faildate>) Else If IsNull(<Faildate>) And Not IsNull(<Death date>) Then DaysBetween(<transplant date> ,<Death date&...