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MJA

A population-based study of thrombolysis for acute stroke in South Australia

Med J Aust 2011; 194 (8): 431-432.

In reply: To a carpenter, everything looks like a nail, and to a stroke thrombolysis sceptic, every study seems to confirm their opinion. A result cannot be “clinically important” yet statistically not so. We found no difference in symptomatic intracranial haemorrhage rates between our study and others using the same definition. The most widely accepted estimates of the true number needed to harm (for functional outcome at 3 months, following treatment within 3 hours) is about 30, as opposed to a number needed to benefit of around three.1

  • Tim Kleinig1
  • James M Leyden2
  • Andrew Lee3
  • Jim Jannes2

  • 1 Royal Adelaide Hospital, Adelaide, SA.
  • 2 Queen Elizabeth Hospital, Adelaide, SA.
  • 3 Comprehensive Stroke Centre, Flinders Medical Centre, Adelaide, SA.


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