Ideally, you would want some survey data, although I think it might be hard to g...

tshaddox on Jan 25, 2015 | parent | context | favorite | on: Evaluation of New Zealand’s bicycle helmet law (20...

Ideally, you would want some survey data, although I think it might be hard to get people to say that they stopped riding their bike because wearing a helmet is inconvenient, even if it's true.