okay I have now read the statistics statement and a couple of articles about it. Whilst I am no statistician, I do understand the argument they make. If you have a lot of deaths you cannot from that say those deaths were murder because they were higher than you would normally expect. The higher number doesn’t by itself increase the likelihood of it being murder. So if in the Letby case, there would be an issue if the prosecution argument was:
a) there was a spike in deaths
b) this spike means that the “excess” ones must be murders
c) Lucy Letby is suspicious
d) Lucy Letby was there for 25 events. Of the 25 events she was there, nobody else was present for anywhere close to as many.
e) so she must be guilty
That is not the prosecution case. It never has been. The people saying that I don’t understand statistics and that the chart is utterly irrelevant and that I’m embarrassing myself are the ones who are showing their lacK of understanding. The point is:
a) during the period in question the consultants on the ward noticed an unusually high number of deaths.
b) furthermore, they felt many of the deaths and collapses made no sense. These are doctors with 20-30 years of experience and they were flummoxed by this and said it just doesn’t happen.
c) they made a list of all the events they found suspicious and noted that one staff member was present. LL.
d) they reported this to the police who investigated.
The difference is that the position that the deaths were suspicious did not come purely from the fact there was a spike. It came from the consultants feeling something wasn’t right. The position that it was murder not natural causes has NEVER come from statistical inferences. The statisticians writing this have clearly not read the case fully and are attributing an argument to the prosecution that was never made.
And if you can’t grasp that and still think it’s a statistics case then you might want to also campaign to posthumously pardon Harold Shipman and to free Ben Geen, Beverley Allitt and Victorian Chua. Because in all cases the spike in deaths alerted the staff and in the latter three, the fact they were always present is what made them suspects. Why is LL
different?