Business
Behind the numbers: what does it mean if a Covid vaccine has ‘90% efficacy’? – The Guardian
Confusion surrounds the vaccines’ effectiveness. The leading Cambridge professor clarifies the data behind the trials
Imagine 100 people are ill with Covid-19. 90% efficacy means if only theyd had the vaccine, on average only 10 would have got ill. Vaccine efficacy is the relative reduction in the risk: whatever your risk was before, it is reduced by 90% if you get vaccinated. There is a lot of confusion about this number: it does not mean there is a 10% chance of getting Covid-19 if vaccinated that chance will be massively lower than 10%.
Researchers estimate efficacy by comparing numbers of new cases in vaccinated…
-
Business24 hours agoDicker Data rides the AI trend to double digit growth
-
Noosa News24 hours agoBob Katter threatens Channel 9 journalist for asking question on family heritage
-
Business21 hours agoDoes Macquarie rate Rio Tinto shares a buy, hold or sell after its big news?
-
Noosa News23 hours ago‘Large scale’ cattle duffing in the NT under investigation