Dear Allstaters,
If the incidence of stroke is 200 per 100,000 per year, and falls by
1% per annum over the next 10 years, how many strokes per year would
one need to have, say, a 90% power to detect that change?
Does anyone have any ideas?
Steff Lewis
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Stephanie Lewis
Medical Statistician
Bramwell Dott Building
Department of Clinical Neurosciences
Western General Hospital
Crewe Road
EDINBURGH Tel: +44 (0) 131 537 2932
EH4 2XU Fax: +44 (0) 131 332 5150
UK Email: [log in to unmask]
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