OK, let's look at what you said 3 posts ago.
OK, that's not going to refute anything much.
That's simply wrong.
We pretty much always do- as I said, sunshine, alcohol...
I already said essentially the same thing. As long as you know the risk is small, you don't need to quantify it
So it's fairly stupid to claim that I don't understand it. Why did you do so?
Is it because you are "a person can't keep track of arguments that were already made"?
I already did.
But you failed to understand it.
What do you think they do with the data from the yellow card scheme?
Do you think they use it as some sort of lottery?
Or, if I make it obvious enough, do you realise that they use it to do analyses of the risks.
It's not a meta-analysis. It's better- it's an analysis of the biggest data set available- the whole uk patient cohort.
And I had already made the point (see above "Actually putting a number on the first risk- say it's a 0.1234% higher relative risk- does not change clinical practice.")
So you were failing to read what I had said.
Which makes this
really stupid, doesn't it?
Do you really not understand that data- including cancer data - is kept under surveillance?
Were you not aware of things like this?
https://www.kingsfund.org.uk/publications/using-data-nhs-gdpr?gclid=CjwKCAjw_uGmBhBREiwAeOfsd9JFjMNx86yeyws3aIGInpt-FBc5zhgBnR_re34pl9FgvUpo3HG__hoC10gQAvD_BwE
So, as I said, if it was a big enough risk to notice, it would have been noticed.
On the other hand, you have failed to spot the real point I made here (presumably because you were too busy ranting).
My point is that "too small to notice" is the same as "too small to notice".
There's one thing which we both agree on- there's a level of risk that's "trivial". Once you know that the risk is less than some cut-off, there's no point putting the resources into measuring it.
And we have systems for monitoring drug safety.
Either our systems are not good enough to spot a problem which is "more than trivial" in which case there's a problem with our systems which has nothing to do with metronidazole.
Or our systems are able to a problem which is "more than trivial" in which case, if the stuff is a problem, then we would spot it.
Which of those conditions are you concerned about here?