Seat-belts usage and analogies

Analogies can be useful for explaining statistics.

A journalist from the Financial Times spoke to me about vaccination statistics. I used an analogy to help explain why the vaccinated share of deaths rises as coverage grows:

About two-thirds of people who die on UK roads are wearing a seatbelt, but this is a consequence of usage rates of nearly 99 per cent, Masters said. He added that the same logic applied to severe disease and death in highly vaccinated populations.