"Dr. Patterson, from most recent YouTube with Dr.
Post# of 142714
That's true for the FULL results, but wrong for the interim results... trial definitely won't be stopped at the interim point if p-value is 0.045 or 0.039 for instance, since it would instill doubt as to efficacy, because the full result could very easily lie above 0.05.
https://online.stat.psu.edu/stat509/node/80/