I have a science background and several degrees but I can't tell in this example the diff between "ratio of attack rates with and without a vaccine" (RRR)
and
"difference between attack rates with and without a vaccine" (ARR)
I know the diff btw a ratio (division) and a difference (subtraction) but can't seem to make sense of this for some reason...input welcome
Saw that. What does the phrase "participants who could benefit from the vaccine" mean? How is that group even defined? There is an implicit ASSUMPTION in there that smoeone could benefit from the vaccine. What if that's completely erroneous?
It's basically vaccinated people divided by the size of the study group, where the other is vaccinated people divided by the entire population... That might not be 100% accurate, but it's essentially a study group vs the total population, and the study group quantity is determined by the manufacturer running the test...
I have a science background and several degrees but I can't tell in this example the diff between "ratio of attack rates with and without a vaccine" (RRR)
and
"difference between attack rates with and without a vaccine" (ARR)
I know the diff btw a ratio (division) and a difference (subtraction) but can't seem to make sense of this for some reason...input welcome
Saw that. What does the phrase "participants who could benefit from the vaccine" mean? How is that group even defined? There is an implicit ASSUMPTION in there that smoeone could benefit from the vaccine. What if that's completely erroneous?
It's basically vaccinated people divided by the size of the study group, where the other is vaccinated people divided by the entire population... That might not be 100% accurate, but it's essentially a study group vs the total population, and the study group quantity is determined by the manufacturer running the test...
What is the difference between division and subtraction?
You know, I never thought of it that way.
You're right; there isn't any!