Of the various different classifications for an 'unfinished' runner which ones actually define a non-runner in the sense that it didn't run at all?
I have been removing anything that matches c("Non-Runner", "withdrawn", "Refused to Race", "Refused") but I don't think it accurate and it's causing me errors in my historical stats.
I want to separate out the classes where the horse didn't run at all from where it ran but then didn't finish.
thanks