I've done a very brief analysis of the numbers/percentages quoted in the case-controlled study (as provided by the cyclehelments website). I've also looked at the responses to this study given by the cyclehelments website and have the come to the following conclusions: (Please feel free to challenge my conclusions - as you know my forum name does include the word 'spin' )
The numbers seem very straightforward; people wearing helmets (involved in a collision causing head injury) had significantly reduced head/brain injuries than those not wearing helmets. The scope of the study didn't seem to investigate any other issues apart from this.
The cyclehelmet reviewers then seem to introduce lots of other details/information that do not appear to be relevant to the study but are used to question the study's conclusions eg
a) the percentage of cyclists wearing a helmet
the income and educational levels of one of the control groups
c) whether the children in one of the control groups were members of a 'group healthcare cooperative'
d) whether the collision involved a motor vehicle (I would agree that the study did not provide enough data to complete a thorough investigation into this area.)
e) whether different age groupings would have produced different results
I could go on (but I won't).
As I said before, this is only a very brief review of the information provided by the cyclehelments website but it seems to me that this website would like to dismiss the results of this particular study. I can only imagine that the website wants to do this because the results have been used elsewhere to promote helmet wearing (and also provide evidence to support helmet wearing legislation). What do others think?
The numbers seem very straightforward; people wearing helmets (involved in a collision causing head injury) had significantly reduced head/brain injuries than those not wearing helmets. The scope of the study didn't seem to investigate any other issues apart from this.
The cyclehelmet reviewers then seem to introduce lots of other details/information that do not appear to be relevant to the study but are used to question the study's conclusions eg
a) the percentage of cyclists wearing a helmet
the income and educational levels of one of the control groups
c) whether the children in one of the control groups were members of a 'group healthcare cooperative'
d) whether the collision involved a motor vehicle (I would agree that the study did not provide enough data to complete a thorough investigation into this area.)
e) whether different age groupings would have produced different results
I could go on (but I won't).
As I said before, this is only a very brief review of the information provided by the cyclehelments website but it seems to me that this website would like to dismiss the results of this particular study. I can only imagine that the website wants to do this because the results have been used elsewhere to promote helmet wearing (and also provide evidence to support helmet wearing legislation). What do others think?