Cardioprotective effect of hormone replacement therapy Is not due to a selection bias

these values would not be.On the basis of validation work done in Britain on the Guy's score5 this would deprive about 5% of patients with infarcts of aspirin treatment, resulting in an increase of only about two preventable events per 1000 patients per three years.Delaying aspirin treatment for 30 days may also "result in an increase in some preventable events, but it is difficult to calculate how many and the number is probably not great.Until the results for the international stroke trial are available it is probably best to delay aspirin for 14 days anyway.The assumption that aspirin will cause rebleeding in all cases of haemorrhagic stroke is almost certainly pessimistic but is based on the axiom "first of all do no harm."