| numberwang said: Pfizer' clinical vaccine trials data: randomized, control, blind. About 45,000 people were divided into two equal groups, one group received the usual double dose vaccination (BNT162b2) and a placebo for the other group. Throwing around magic Covid-tests they got 91% efficiency against Covid. Sounds great, right? "Covid In this update to the preliminary safety and efficacy report of a 2-dose regimen of 30 μg BNT162b2 given 21 days apart, 91.1% vaccine efficacy (VE) against COVID-19" BUT, 15 people died in total in the vaccine group (mostly heart complications) compared to only 14 in the placebo group. Vaccinations slightly increased overall mortality. This has been concealed because "non-Covid deaths" among the vaxxed were brushed aside. "During the blinded, controlled period, 15 BNT162b2 and 14 placebo recipients died" Study: https://www.medrxiv.org/content/10.1101/2021.07.28.21261159v1.full-text Shouldn't a vaccine against a very common "lethal pandemic" lower overall mortality? |
so out of 20,000 participants in each group 15 from the vaccine side died and 14 from the placebo side died. So on one side you have 0.075% of the test group die and on the other side you have .07%. Stats isn't my field but just looking at those numbers I'd be very surprised if such a small difference is statistically significant. Found a quick calculator for statistical significance between two groups and it seems to indicate that that kind of difference in such a large sample size is insignificant which I imagine is what the researchers concluded.
This study was not done in the numbers necessary to see a significant number of Covid deaths. You follow 20,000 people, 800 of them get covid during that time, 30 of them got severe cases, 2 of them died from it. Given that we have 100,000 new covid cases a day in the US one would expect about 0.25% of those to die based on these numbers which turns out to be ~250 deaths a day which is what we're seeing (~400) so these numbers match up with expectations they're just small because you can't really capture a 0.25% death rate well in a random group of 20,000 people where only 800 actually got Covid.
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