[mathgenius]

It seems that people missed the fact that the article has plenty of links supporting his claims. Unfortunately the link colour is almost the same as the text colour.

One of the most compelling studies is from New Zealand [1]: "The New Zealand Medical Journal published Evaluation of New Zealand's bicycle helmet law ... showing a massive plunge in cycling levels and a 20% higher accident rate since helmet law enforcement."

Also, there was a study showing that cyclists with helmets receive less space from passing cars than those without.

[1] http://www.cycle-helmets.com/zealand_helmets.html

[kyberias]

Did you really analyze whether the study provides good data? Does correlation imply causation?