4 ms·
There's some debunking of helmet studies here: https://www.cyclehelmets.org/1027.html https://www.cyclehelmets.org/1027.html
by ndsipa_pomu 4y ago
There's some debunking of helmet studies here: https://www.cyclehelmets.org/1027.html https://www.cyclehelmets.org/1027.html
- peoplefromibiza 4y agothanks. A very good example of what "selection bias" means.