After reading about all of this stuff regarding OTIVIDEX, I am interested in what the criteria was for someone to be excluded from the per protocol (PP) group. The p-value was 0.031 in this group, while it was 0.312 in the intent-to-treat (ITT) group. That seems like quite the difference. Generally, ITT performance matters more (why the study failed) because it's more conservative and doesn't account for the people that, for example, dropped out of the study or became loosey-goosey with study guidelines because it wasn't working. The sample drop from ITT to PP was n=148 to n=136. I wonder what those 12 people did and how bad it really was.
Honestly, I'm also really confused as to why this drug was restricted to unilateral Meniere's vertigo symptoms. I get that it's too complicated to have a study with unilateral Meniere's, bilateral AIED, Meniere's with varying levels of hearing loss, etc.
But just as a layman speaking, this drug sounds like it has higher potential for AIED, ISNHL, SSNHL than it does just for vertigo. Maybe they had to pick one study direction and picked wrong? I'm not sure.
Hindsight is 20/20. Maybe no one had any idea that vertigo was so prone to the placebo effect. I really like
@patorjk 's question about whether or not the actual injection played a role in upping the performance of the placebo group.