The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
that's an absolute risk reduction of 4.7 percent which means a number needed to treat of 21. that means to prevent a very serious infection you need which requires by definition hospitalization you need to treat for me you need to treat 21 people
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
the nnt meaning the reciprocal of 1.7 percent is 58.
the absolute risk of an adverse outcome in this case meaning serious infection hospitalization icu and death if you were in the placebo group was 2.6 and if you got the vaccine it was 0.89 percent and if you take the delta between those two numbers you get a number of 1.7 percent
so what is the effectiveness of the vaccine well the effectiveness of the vaccine is one minus that ratio and that's 66