Originally Posted by
trampie09
No no butt, you have showed Porthcawl.
What is this base rate you refer too ?
What is specificty and sensitivity you refer too ?
If you are not putting a value on anything then your posts are meaningless, if you have no idea if the accuracy of the tests are very close to the 70% figure often routinely quoted, or if they are higher or lower, then you going on about the testing accuracy is pointless.
I'm not saying the figure is or isn't correct but it seems to be widely accepted, you dispute it yet you don't say if in your view the figure should be higher or lower.