This is not an R question. Post elsewhere. Better yet, contact a local statistical consultant.
-- Bert On Wed, Aug 28, 2013 at 7:18 AM, Donald Catanzaro <dgcatanz...@gmail.com> wrote: > Good Day All, > > I am working with a diagnostic test and comparing the new test to an old > test. Normally I would be able to calculate sensitivity and specificity > quite easily. > > However, the 'gold standard' that I am comparing my new diagnostic with is > really 'gold-plated' in that sometimes the 'gold standard' fails completely > and I have no data from the 'gold standard' but I might have data from the > diagnostic test. Of course sometimes my new diagnostic fails but I have > data from my 'gold standard' > > To me this really starts moving towards classification but I cannot seem to > find the appropriate calculations. > > Can someone point me to some web resources to determine the appropriate > method to be able to deal with the NULLs ? Resources within the medical > realm would be better (because the rest of the folks would understand them > better) but not required. > > -- > - Don > > Donald Catanzaro PhD > dgcatanz...@gmail.com > 16144 Sigmond Lane > Lowell, AR 72745 > 479-751-3616 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
