boooooooooo_cowboys t1_j26wrg7 wrote on December 30, 2022 at 2:14 AM

Reply to comment by oboshoe in Higher COVID-19 vaccination rates are associated with lower COVID-19 mortality. A 10-percentage-point increase in vaccination was associated with an 18.1% decrease in mortality after 6 months and a 16.8% decrease after 12 months. High-income countries had higher vaccine coverage. by glawgii

It’s not an overall 18% drop in mortality. A 10 percentage point increase in vaccination leads to an 18% drop in mortality.

oboshoe t1_j26xx1r wrote on December 30, 2022 at 2:22 AM

i would have expected 90% plus for that segment.

18% is a slight reduction in the risk of death from covid for that segment

i mean hey - i'll take it. i did. but i thought it was far far more effective based on the messaging i've seen.

Muscadine76 t1_j29le1v wrote on December 30, 2022 at 5:18 PM

That’s not what these statistics represent. This is looking at population-level statistics and relative risk of death when contracting Covid, not just among people who were vaccinated.

So, for example, this is comparing death rates in countries with, say, 20% vaccination rates vs 30% vaccination rates. What they found was actually an outsized protective effect: not 10% fewer deaths, but 18%, when 10% more were vaccinated (and not noted in the headline, the booster effect is closer to 33% reduction in deaths). This could in part be because people at highest risk of dying were the ones most likely to get vaccinated (and boosted). It might also be that more vaccinations not only protected people with vaccinations but helped prevent spread of disease and therefore overwhelming of healthcare centers, so more effective care of Covid cases was possible. But there may also be other confounding country-level effects like baseline healthcare system effectiveness.