Premium Only Content

Relative risk and efficacy using AstraZeneca vaccine trial
The aim of new treatment interventions such as vaccines, is to lower the risk of disease. This is a very topical discussion as many vaccines have been, or are currently, subjected to clinical trials.
These trial express their results as efficacy. Efficacy is calculated from relative risk. It is hoped that a vaccine will lower the risk of infection when compared to placebo.
In this video tutorial, I use the R language for statistical computing to explain risk, relative risk, efficacy, and most importantly, confidence intervals for efficacy.
In February 2021 South Africa received their first batch of vaccines (Astra Zeneca). Prior to a roll out to healthcare workers a small trial appeared which showed efficacy of only 21%. For this, and other findings in the trial, the vaccine was withdrawn.
Because the trial was so small and the risk of developing mild and moderate COVID-19 was low in each group, the confidence intervals around the efficacy was very wide.
-
LIVE
PandaSub2000
5 days agoLIVE 9:30pm ET | MADISON VR (The Scariest Game Ever Made)
102 watching -
2:34:32
Badlands Media
4 days agoCODEX 9/11
253K188 -
1:53:43
Nerdrotic
5 hours ago $0.24 earnedMysteries of 3I/ATLAS | Forbidden Frontier #113
35.1K4 -
2:04:21
vivafrei
1 day agoEp. 278: D.C. Peace Wave! Big Tish & Nipple Judge SPANKED! "Maryland Man" Trafficker FREE & MORE?
79.1K93 -
LIVE
Damysus Gaming
1 hour agoBorderlands 3 - Part 8 - FL4K Time | Children of the Vault be Warned!
44 watching -
LIVE
Patriots With Grit
5 hours agoWhat You Should Know About Harmful Vaccine Ingredients And What To Say To Your Doctor, Pediatrician, Health Department or School When They Pressure You, Your Kids Or Your Family Members | Dr. Bryan Ardis, D.C.
297 watching -
LIVE
This is the Ray Gaming
1 hour agoSunday Night Live with the Boys | Rumble Premium Creator
35 watching -
LIVE
ItsMossy
1 hour ago🍃NEW MIC WHO THIS🍃DRIVING SIM GO BRRR🍃420 SESH🍃
17 watching -
LIVE
THOUGHTCAST With Jeff D.
1 hour agoSunday night Fortnite With ScottishVikingGaming & crew
24 watching -
LIVE
a12cat34dog
2 hours agoSOLID DAWG RETURNS :: METAL GEAR SOLID :: 1998 IS UNFORGIVING {18+}
62 watching