st: Pencina's NRI and IDI reclassification indices

[John Cornell <cornell@uthscsa.edu>]

Title: Pencina's NRI and IDI reclassification indices

Dear Members:

I am looking for functions to compute Pencina’s net reclassification improvement (NRI) and integrated discrimination improvement (IDI) indices to evaluate the added predictive value of a new biomarker. Net search failed to find a function for these measures. Has anyone programmed these functions in Stata?

Cheers,

John E. Cornell, Ph.D.
Professor
Department of Epidemiology and Biostatistics
University of Texas Health Science Center, San Antonio
7703 Floyd Curl Drive
San Antonio, Texas 78229-3900

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"Expectation, hope, intention towards possibility ... this is not only a basic feature of human consciousness, but ... a basic determination within reality as a whole."

-- Ernst Bloch
-- The Principle of Hope, vol. 1



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