General Discussion
In reply to the discussion: 15,739 breakthrough COVID-19 cases in Massachusetts; 3,098 reported in one week [View all]Ms. Toad
(33,915 posts)in measuring the efficiency of seatbelts. Efficiency measures how effective the safety measure is compared to doing nothing. As for vaccines - how many cases of COVID in vaccinate dpeople compared to how many cases when we do nothing. For seatbelts - pick a bad outcome (death, for example) - efficiency measures how many deaths for seatbelt wearers v. how many deaths would happen anyway..
Efficiency = bad outcomes with the proposed safety measure/bad outcomes when doing nothing.
For seatbelts: Deaths while wearing seatbelts/Deaths while not wearing seatbelts.
For vaccines: Death or serious illness (the study endpoints) with vaccines/death or serious illness for unvaccinated people.
Way too many people on DU need a high school mathematics class.