This data needs to be framed against the % of the population that was vaccinated at the time they contracted the virus, right? Otherwise, for all we know, the vaccine could actually increase mortality if the % vaccinated was smaller than the % of deaths that group represents. I'm assuming that isn't the case but hard to make meaningful conclusions about efficacy without that context. The apparent efficacy of vaccinat…
> This data needs to be framed against the % of the population that was vaccinated at the time they contracted the virus, right? No, it does not. It compares chance of you dying to covid compared to all other possible causes. This dimensionless number does not depend on relative population sizes. So if in one population you get 458 deaths from Covid compared to 57,263 from all other causes and in the other population…
Vaxxed group is older, unvaxxed are younger.
i.e. groups are not randomly distributed.
They are going to have different risk factors and die of different things.
This showed up in British Columbia's health data that showed infections and hospitalizations way, way down for the vaxxed relative to unvaxxed, but the ratio between the two for actual deaths was not as extreme, because vaccinated population skewed older, more vulnerable, more likely to die even when fully vaxxed.
Should note that age-standardized mortality rates are included in the study.