Helmets discourage cycling

Discussion in 'Technical Chat' started by Tony Raven, Oct 11, 2010.

  1. Tony Raven

    Tony Raven Guest

    Due to be published imminently in the Journal of Law and Economics:

    http://web.merage.uci.edu/~kittc/Ca...t Laws JLE Accepted Manuscript 03 04 2010.pdf

    Intended and Unintended Consequences of Youth Bicycle Helmet Laws

    Christopher S. Carpenter and Mark Stehr*

    Over 20 states have adopted laws requiring youths to wear a helmet when
    riding a bicycle. We confirm previous research indicating that these
    laws reduced fatalities and increased helmet use, but we also show that
    the laws significantly reduced youth bicycling. We find this result in
    standard two-way fixed effects models of parental reports of youth
    bicycling, as well as in triple difference models of self-reported
    bicycling among high school youths that explicitly account for
    bicycling by youths just above the helmet law age threshold. Our results
    highlight important intended and unintended consequences of a
    well-intentioned public policy.
    Tony Raven, Oct 11, 2010
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  2. Tony Raven

    Simon Mason Guest

    Australia will be struggling in its attempt to double cycle use in the next
    6 years then.


    "If he's looking for a quick win perhaps Mr Albanese could do worse
    thanstudy the findings of recent Sydney University research into the
    benefits orotherwise of Australia's compulsory helmet law. Doctor Chris
    Rissell, whoconducted the study, found that there was a 30% decline in
    numbers ofcyclists after the wearing of helmets became compulsory in 1991.Dr
    Rissell argues that cycling became not just less popular but less safe
    atthat point because of the smaller numbers of cyclists on the roads."
    Simon Mason, Oct 11, 2010
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  3. Tony Raven

    Simon Brooke Guest

    Ooh, serious research, with careful citing and critical evaluation of

    "...as there is ample medical evidence that helmets reduce the
    likelihood of serious head trauma and brain damage in bicycle accidents
    by as much as 85 percent, particularly among children (see, for
    example, Thompson, Rivara, and Thompson 1989)."

    "We are not aware of estimates from the public health or medical literatures that directly estimate the technological efficacy
    of bicycle helmets at reducing fatalities, though Thompson et. al.
    (1989) use case-control methods to find that bicycle helmets reduce
    serious head and brain injuries by over 80 percent..."

    Clearly a very dedicated and thorough team of researchers.

    http://www.journeyman.cc/~simon/ :: PGP public key on home page

    ;; USER ERROR: replace user and press any key to continue

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    Simon Brooke, Oct 12, 2010
  4. Tony Raven

    Tony Raven Guest

    Which makes it even more interesting that they can't escape their
    conclusions on discouragement despite being strongly pro helmets.
    Tony Raven, Oct 12, 2010
  5. Prima facie, it is more likely that they copied the reference and a
    summary of its contents from another publication, and neglected to
    read it.
    Percy Picacity, Oct 12, 2010
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