Need to come clean and admit that:
I worked in medical informatics as a designer and implementer of medical software systems (I briefly mentioned one such on the Orion Healthcare thread).
I am good with numbers and understanding what they actually represent and what are meaningful conclusions that can be drawn from them (though I occasionally get it wrong :mellow:).
I am confident that the PPV near the end of the video on this
CxBladder.com page is very wrong, even if the music is OK:
Attachment 5991
and that this is right:
Attachment 5992
And here is a
nice little article about medical professionals and statistics, which makes you wonder whether this discussion is worth the candle :scared:.
Best Wishes
Paper Tiger