>>13207511>Halving your chance of attack is pretty good for a vaccineit doesnt halve it
>>13207307it means the following
if you have a 1 in 100,000,000 chance of winning the lottery and taking the vaccine doubles the chance of you winning it, then your actual chance of winning the lottery is 2 in 100,000,000
using a drug example, say in the placebo group of 100 people only 2 people died, that means a 2% chance of dying with the placebo. in the control group say 1 people out of 100 die, 1% chance then. The drug companies are allowed to say the drug increases your chance of surviving the disease by 50% (number of people that died on control group divided by number of people that died on placebo group).
The actual reduction would be 2% - 1% which would be a 1% reduction
The authors here cite the actual absolute risk reduction (the 1% reduction i mentioned) for various vaccines
https://www.thelancet.com/journals/lanmic/article/PIIS2666-5247(21)00069-0/fulltextsome dont even go beyond 1%
