Thompson DC, Rivara, Thompson RS. 1996
Full paper available on-line mate :D
Summary report of the Harborview Helmet Studies.
Study at 7 Seattle hospitals involving 3,390 cyclists who were injured or died 1992-4. Individuals with head or brain injuries compared to those involved in crashes but who did not suffere such injuries. 50.6% had worn helmets at time of crash. Concluded that helmets decrease risk of head injury by 69%, brain injury by 65% and severe brain injury by 74%. Helmets work equally well for all age groups, and in crashes with and without motor vehicles (which are most important risk factor for serious injury). Substantial protection provided against lacerations and fractures to upper and mid-face, but not to lower face. Hard shell helmets may offer greatest protection against severe brain injury
To be honest I dont think wearing a lid makes me super man but I think I am better off with one than with out, if you dont want to then dont will happily ride with you and go for a pint afterward (would think your daft though!!! :twisted: !!!)