Dear Allstaters
I have a logistic model for some dose response data.
My medical colleagues want to quote the NNT (numbers needed to treat),
and give confidence intervals.
The algebra for the transformation from the logistic to the inverse of a
difference in probabilities scale isn't trivial. I would be grateful for
any references to a good solution, before I embark on the algebra.
thanks
Jane Hutton
Dr J. L. Hutton Department of Statistics
Senior lecturer University of Newcastle upon Tyne
Tel: 0191 222 6344 Newcastle upon Tyne
Fax: 0191 222 8020 NE1 7RU
Email: [log in to unmask] United Kingdom
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