[R] Power tests for ROC analysis

[Robinson, Peter]

Dear List,

please forgive this question from a hobby statistician, but I was wondering if there is any way of doing power calculations to estimate how much data is needed so that the sensitivity/specificity values along a ROC curve will be within a certain confidence interval? I am not aware of any such method, but was recently asked how much data would be needed to perform ROC analysis for a study.

Thanks a lot,
Peter

Dr. med. Peter Robinson, MSc.
Institut für Medizinische Genetik
Universitätsklinikum Charité 
Humboldt-Universität
Augustenburger Platz 1
13353 Berlin
Phone: ++49-30-450 569124
Fax: ++49-30-450 569915
peter.robinson at charite.de
http://www.charite.de/ch/medgen/robinson