I would be interested in what evidence you base your decision making. If
you CT more than Canadian rule would suggest then you must have a very low
threshold for scanning. Do you scan every head injury, and have you
audited your yield of positive scans. If you are doing so well why not
submit your protocol to EBM review.
I have read the paper and though it has flaws, it is enrolled a large
population, and was structered to minimise flaws. You would also hope that
the statisticians and reviewers in the Lancet are talented enough in
EBM/critical appraisal to make a valid judgement to know whether or not
its findings are valid.
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