Or for the oposite. If placebo guys die 30% then the active group with a good PV theres no point waiting for interim
That's not completely true. Theres something called hazard ratio. If placebo group gets to 1.3 ratio the trial has to be stopped due to safety, thats another trial stopping point that might happen. and it is in the cards
So whats your point?
Companies presents data from failed studies as well as good ones.